Democritus fled to the desert for the sake of tranquility, 381. A Demonstrative science is chiefly studious of the universal affirmative proposition, more than the negative, 333. A demonstration seeks the universal, neglects the particular, ibid. Demonstration, strictly so called, is perfected from first principles and things that are so per se, 115. A descriptive definition, from what it is derived, 112. A description, from what it is derived, ibid. The utility of both, ibid. Whence the appellation is taken, 15. Denominatives, look under paronyms. Dense, what it is, 208. *to deon* (the necessary/due), is homonymous, 370. God, *autosophia*, that is, wisdom itself, 47. God, insofar as he has rested from his work, and yet continues to work, 99. Dieresis, epidieresis, hypodieresis, or division, subdivision, and sub-subdivision, how they differ, 24. B *Diamira* (dialectic division), what it is, 36. Reason (*mens*) is also said to exist potentially, 57. It differs from opinion, which is with reasoning, ibid. The operation of *diamira*, that is, intellection, why it is called a passion, ibid. Differentative definitions, 106. Essential difference and that which is strictly so called, what it is, 106. Differences are strictly called both divisive and constitutive, from a different respect, 106. They effect something else, 115. They lead to definitions, ibid. The division of essential difference, how manifold, ibid. Difference, commonly and strictly, produce a diverse result, 112. They contribute not only to definitions, but to descriptions, ibid. Differences are also called species, yet not without distinction, 108. Disjunct, what it is, 361. Disposition, what it is, 202. C Diverse is said in three ways, 151. Diverse things, what they are, 67. Diversivocal (*heteronyma*), what they are, 68. The modes of dividing are eight, 20. Of which three indeed are so strictly, the others are said to be so more abusively, 22. Ante-predicamental division, 122. Posterior, 130. Election, what it is, 34. Elenchus, 381, 385. *Enhypostaton* signifies two things, 151. Being (*ens*), what it is, 136. Being is not a genus of the predicaments, ibid. The beings in which contemplative philosophy is engaged are threefold, 56. The five genera of beings according to the opinion of Plato, 99. Enunciation is preferred in four ways, 269. "Is," "was," and "will be" have a twofold signification, of existence and of time, 263. They are called primary verbs, 264. Experience, what it is, 10. Whence it is and arises, 30, 38.
F. To act (*poiein*), what it D is, 26, 227. Acting is threefold, 228. Acting (which they otherwise call to perform), and to suffer are not contraries, 230. Factive arts, what they are, 229. Figure, what it is, 207. Figure and form differ, ibid. The first syllogistic figure, 329. The second, 330. The third, ibid. The commonalities of the three figures, 330, 331. The proper properties of the figures: of the first, 331. Of the second, ibid. Of the third, 331, 332. The order of the figures, 332. The first figure is perfect, 348. The second and third are imperfect, ibid. The proof of the first figure, what kind it is, 347. Of the second, 348. Of the third, 348, 349. Form is said in two ways, 207. Fortune, what it is, 291.
G. The significations of genus, 86. Genus in logic, what it is, 87. Genera are the causes of proper species, 89. Genus, what it is, 16. The ten most general genera, 100. Subaltern genera, what they are, 90. Genera and species are said to be before the many, in the many, and after the many, 96, 97. Generation and corruption, why they are mutations, not motions, 192. Geometry, what it is, 60.
H. To have is homonymous, 231. Predicamental "having," what it is, 126, 232. "To have" and "to possess," how they differ for Plato, ibid. The division of predicamental "having," 232, 233. Habit, what it is, 202. Of habits, one perfects, another depraves the subject, 202. The various significations of habit, 241. Helenus, who he is, 47. Helena, who she is, ibid. Heterogeneous and heteroideal, how they differ, 182. Heteroideal, what is most truly so called, ibid. Heterohypostata, what they are, 151. Definition of man, 9, 166. Homoideal and homogeneous, how they differ, 151, 152. Homousia, what it is, 154. Homohypostata, what it is, 151. Homonyms, what they are, 68. The requirements of homonyms, 68. Hypostasis signifies two things, 154. Hypostasis, individual, and person are one to the fathers, 156.
I. The same, according to diverse reasons, to be placed in diverse predicaments, 218. Imagination, what it is, 35. The marvelous power of imagination, 207. Imagination, for Aristotle, is the passive mind, 35. Imagination differs from sense, ibid. Also from the naked action of the soul, 36. We have a complex intellection of imagination, 56. The impossible is twofold, 289. The impossible and the absurd differ, 349, 350. This logic was written for the Emperor, 65, 264. To be in something is said in eleven ways, 146. The unequal receives "more" and "less," 217. Indifferent (*adiaphoros*), what it is, 241. "Individual" signifies four things, 100. Individuals are determined neither by nature nor by cognition, 98. Species of individuals are not genera, 91.
J. Jews, who they are, and whence and in how many ways they are said to be, 87.
L. Motion (*phora*), what it is, 191. Smooth, what it is, 208. Smooth and rough are positions, they are not qualities, ibid. Place, what it is, 187. The utility of logic, 1. Definition, 86.
M. "More" and "less" belongs to imperfect things, 217. It is in contraries, 179, 211. Evil is not a species, but an elapsing from the good and a contrary to the good, ibid. Physical matter and form are more substantial than substances, 173. The matter of propositions, what it is, how manifold, and whence it is so called, 270. Subdivision of contingent matter, 280. Subdivision of mathematics, 58, 59. Mathematics, why so called, 58. The essence of mathematics, what it is, 62. Medium, Archytas also establishes it among relatives, 241. Medium, so that it may be opposed to the extremes, 242. Mind (*nous*), how it knows, 38. Those who operate according to the mind, who and what they are, ibid. Metaphysics, why so called, 62. Music, what it is, 60. *Metaballon*, that is, what is changed, in how many ways it is changed, 192. Mode of propositions, what it is, 271. Modes, how many, ibid. Syllogistic mode, what it is, 330. Asyllogistic modes, which they are, 339, 342. Syllogistic modes of the first figure, 336. The second, 336. Monsters, they are rare, 290. Moral philosopher, who he is, 60. Death is twofold, natural and elective, 45. And what each is, ibid. Mode is not a quantity, but is considered in quantity, 217. Also, some rest is opposed to every motion, 193. To celestial motion alone there is no contrary motion, 196.
N. Nature, for the most part, rightly performs its function in its own works, 290. Navigation of the air, or that which is carried in the air, a figment, 50. Necessary is twofold, 289. The negative particle, if transposed by itself, changes propositions, 306. Negation, what it is, 269, 301. How it is made, ibid., and 304. The proper property of black, 203. Noun, what it is, 255. Nouns are by convention (*kata synthen), that is, by institution and composition, 255, 256. The parts of a noun...
those that are without signification, 257. A noun is without time, 258. How nouns differ from verbs, ibid. What are called nouns by the Logicians, ibid. On "of nothing" (*kat' oudenos*), what it is, 318.
OEconomicus, who he is, 60. On "of all" (*kata pantos*), what is said, 318. Whether "the all" is not the universal itself, but that which signifies universally, how it is to be understood, 281. Opposites, what they are and in how many ways they are spoken of, 238. Speech, what it is, 267. Five species of speech, ibid. Enunciative speech, what it is, 269. Species of enunciative speech, ibid. Speech and diction differ.
P: Paleness from fear, how it happens, 206. All paralogisms are reduced to the ignorance of the refutation, 385. Why they are called sophistical refutations, 388. Etymology of *parthenou* (virgin), 73. Paronyms, whence they are named, 70. What they are, 72. Four requirements of paronyms, 72, 73. How they differ from words from one, 74. Similar and dissimilar parts (*mere homoiomere* and *anomoiomere*), what they are, 20. Particulars are subject to change, 123. A Passible quality and passion differ, 204. Both are also observed in inanimate things, ibid. Threefold passible quality of animate things, ibid. Passible qualities of inanimate things are known either in regard to the soul or in regard to the body, 205. Passions, what they are, 206. Passions belong to both inanimate and animate things, 207. The passions of animate things are either in regard to the soul or in regard to the body, 206. A father is greater than a son, by reason of nature, 389. To suffer (*pati*), what it is, 126, 217. One kind of suffering is perfective, another is corruptive, 229, 230. Peripatetics, whence they are so named, 54. "Per se" and "primarily" differ, 115. Six definitions of philosophy, 43, 44. Philosophical meditation on death, 44, 45. Philosophical likeness to God, how much of it can fall to man, 45. Division of philosophy, 56. Subdivision of contemplative philosophy, ibid. Objects and order of contemplative philosophy, 57, 58. Subdivision of practical philosophy, 59. Philosopher, who he is, 47. Active philosopher, who he is, 61. Physiology, what it is and what things it concerns, 62. Potency, what it is, 203. "Posterior" is said in five ways, 139. Predicament (*kategoria*), why it is so called, 130, 135. Definition of the predicaments, 131. Investigation and order of the predicaments, 133, 138. All predicaments are simple, 134. They differ from the five voices or predicables, 135. Predication, handling itself equally and more broadly than the subject, 142. Predication "of a subject," what it is, 143. Predication "in a subject," what it is, 144. Predicate term, what it is, 270. Prior "by nature," what it is, 25. "Prior" is said in five ways, 157. Privations, significations of, 245. Privation, when it is strictly spoken of, 246. This privation is of capacity itself, ibid. Privation is not of evil, but of good, ibid. Privation, how it is to be judged, 247. Proposition, whence it is given, 270. Proposition, what it is, ibid. Proposition, one from subject and predicate, 272. Several propositions, 273. Indefinite propositions, 280. Definite, ibid. Universals, as universally accepted, 281. Universals, as particulars, 282. Particulars differ from singulars, ibid. Contrary propositions, what they are and why they are so declared, 283. Subcontrary, 285. Subaltern, ibid. Contradictorily opposed, 286. Those which always divide the true and the false, 287. Propositions with modes, which are commonly called modals, 304. Major of a simple syllogism, 319. Minor, ibid. Major and minor in composite syllogisms, ibid. Proposition in a syllogism, which is better and which is worse, 319, 420. The conclusion follows the worse proposition, ibid. From two particular or negative propositions, a syllogism is never made, 321, 294, 295. Singular propositions in contingent matter regarding future time act as indefinite, 293. Proposition, question, enunciation, instance, conclusion, differ only in habit, 273. Privative proposition, what it is and why it is so called, 395. Negative, of what things it is said, 394.
B Proprium in definitions and descriptions holds the position of a difference, 16. The proper is also an adjunct of essence, more excellent than any accident, ibid. One is an essential proper, another is an adjunct of essence, 80. Properties are assumed in definitions, 82. The property of man is twofold and why, 82, 118. Proper is said in four ways, 116, 117. Platonists accept the proper in three ways, 120.
Qualities (*qualia*), what they are, 209. They are accepted in four ways, ibid. Quality, what it is, 201. Species of quality, ibid. Proper qualities, first, 210. Second, ibid. Third, 211. When, what it is and how manifold, 126. Continuous quantity, what it is, 59, 186. Species of continuous quantity, 187. Continuous quantity, one is in abiding and state, another is in motion, 60. Discrete quantity, what it is, 59, 186. How manifold, 186. Discrete quantity, one is per se, the other has respect to another, 59. Continuous and discrete quantity is also observed in the whole world; they have no position relative to each other, 189. Quantities that are definite, what they are, 177. Quantity according to accident, 190. Properties of quantity, first and second, ibid. Third, 211.
R: Rare, what it is, 209. Rare and dense, in bodies other than the elements, are positions, 208. Reduction of the second and third figure to the first, 361. To rule, in science, what it is, 3. Kinship and containment of kingdom and philosophy, 2, 3. Redness, from shame, whence it arises, 206.
S: Scarabs, 219. Habit (*schesis*), is said in four ways, 88, 221. Science, what it is, 32. Why it is so called, 33. It is generated from diaeresis and mind, 39. It differs from art, ibid. It is not of particulars, 123. Sect in philosophy, what it is and how manifold, 52. Sense, what it is, 35. Signs of propositions, four, 289. They are always joined to subjects, ibid. They are spoken of in the feminine gender among the Greeks, 283. If propositions are transposed per se, they sometimes fall, 307. An ape does not truly laugh, 117, 383. "Together" (*simul*), is said in three ways, 160. To be in a position (*situm esse*), what it is, 126. To be in a position, how manifold, 127, 129. Species, two significations, 87. Species, what it is to logicians, 88. Species and genus are of the number of those things which are spoken of in relation to something, 88, 89. Most specific species, what it is, 89, 90. Most specific species cannot be comprehended by knowledge, 99, 124. Species *antidiouremena* (opposed by division), what they are called, 27. In species and individuals, that which is prior by nature is not looked at, 26. Stoics, who they are and whence they are named, 53. The signification of subject is twofold, 130. Subject in relation to predication, what it is, ibid. To be in a subject and to be said of a subject, 131, 132. Subject term, what it is, 270. Substance, what it is, 136. Substance is prior by nature to accidents, 138. Substance and substantial differ, 146. Substance (*ousia*) signifies two things, 163. Predicamental division of substance, ibid. Whether substance primarily and properly and maximally are individuals or species, 168. Proper substance, first, 173. Second, 174. Third, 176. Fourth, 178. Fifth and sixth, 179. Substance, nature, form, are one to the fathers, 169. Syllogism, what it is, 314. One is simple, one is composite, 311. Perfect syllogisms, which ones, 346. Imperfect ones, which is the first, 362. Second, ibid. Both by continuation, 364. Third by distance from a negative complex, ibid. Fourth from a disjunctive, 365. Fifth also from a disjunctive, ibid. Sixth from total hypotheses, 367. Synonyms (univocal), what they are, 66. Synonym (univocal) is accepted in two ways, 175.
T: Term of propositions, what it is, 317. Of what quantity terms of propositions can be, ibid. Term, when it is transposed in propositions, creates diverse figures, 329. Terms of a simple syllogism, three, 328. Thesis, what it is, 52.
C Toto (in) what is it, 317. Not in toto, what is it, 318. Transposed affirmation and negation, of what things they are said, 394 (in). Why it is so said, 302, 394.
U Ubi (where), what it is and how manifold, 126. The one is contrary to the one, 242. Universals always behave in the same way, 124.
V Verbum (word/verb), what it is, 255. Words are D κατὰ συνθήκην, that is, by institution and composition, 255, 256. They are not by nature, ibid. What they signify, 258. What logicians call words, ibid. Words through themselves signify neither true nor false, 259. Of words of the first and second and a certain third person, 1628, why they signify true or false, 128, 129. Words imply a double signification, 301. Verum (truth), what it is, 261. Vision operates beyond interval and distance, 375. Life is twofold, the one natural, the other elective, 44. Will, what it is and what kind of power of the soul, 34. Voluptuaries, whence so called, 53. Voice, articulate and inarticulate, 77. Articulate, what it is, ibid. Significant and predicative voice, what it is, ibid. Subdivison of the predicative voice, ibid. The order of the five voices, 78, 79. Five voices are more rational than predicatives, 127, 259, 260. Voices are by nature, 256. Simple voice, diction, term, noun and verb are the same subject, but differ in arrangement (schesis), 261.
ANALYTICAL INDEX TO THE PHYSICS EPITOME OF NICEPHORUS BLEMMIDA
(Of this volume, col. 1005–1319.) *The reader is referred to the larger numbers inserted in the Latin text.*A Actu esse (to be in act), what it is, 39, 40, 43. To be in act is twofold, 47. To be in act and act itself differ, 45. Equinoctial circle, what it is, 287. The equinoctial circle always has a half above the earth, 331. Equinoctial is under the pole, and is both arctic and horizon, 566 [366]. Vernal equinox, when it occurs, 350, 352. Autumnal, when, 351, 352. Air, what it is and how it is moved, 256. Parts of the air, 145. Part of the air near the earth, what it is like, 144. Eternity, what it is, 270. Ether, what it is and whence it is so named, 281. One part of the ether is sincere, another less sincere, 145. Place of the ethereal body, 144. Things that do not act and are not acted upon, how many kinds, 27. Soul, what it is, 38. Animals, how they move, 61, 54, 55, 64. Rainy, windy, and dry years, 191. Antoeci, who they are, 337, 338. Common and diverse things of the Antoeci, 361. Antiperistasis, what it is, 170. Antipodes, who they are, 337, 338. To the antipodes all things are inverted for us, 361. Water, circular figure of, 334. Causes of waters which fall onto the earth and are returned from the earth, 175. Differences of waters, 179. Water above the firmament is of infinite multitude, 187, 375. Arctic and Antarctic circles, what they are, 347. They are changed according to the variation of the place, 287, 348. Argestes, what kind of wind, and by what other names it is called, 191. Aspirations from the earth, what they are, 190, 200. Natural augmentation, how it happens, 56, 88. How mathematical, 56. Augmentation and alteration differ, 89. Generation of gold, 254.
B Boreas, what wind, and how it is called, 195. Night of the Britons, how long and of what kind at the time of the summer solstice, 364.
C Caecias wind, 195. Things heated first and more quickly are cooled more vehemently, 173. Canopus star, 340. Capra, what it is called, 148. Chance (casus) is in those things which happen for the sake of something, 29, and which happen according to nature, 30. It is also in the operations of brutes, ibid. 15; it is equivocal, 31, 15. Cataegis, 199. Cause and principle differ, 3, 24. A cause is spoken of in many ways, 3. Proper causes, what they are, 4. Various divisions of causes, 24. The supreme cause of each thing, that is, the principal one, must be sought, 27. Causes are to be assigned in such a way that they befit the effects, 19; some things are causes to one another, 29. Causes per accidens, what they are, 29. More causes, nay indeed all, are considered in the same effect, 28. Ceadas among the Lacedaemonians, what it is, 119. Center, the principle, end, and middle of a circle, 66. Circle, the first of all plane figures, 267. Ratio of circles to their own diameter, 296, 341. Tropic circles, why so named, 287. They are the same everywhere, and the equinoctial, ibid. 16. Clepsydra, what it was to the ancients, 369. Climate under the equator, what it is like, 347, 362. Enumeration of climates, 363. Climates in which a day of two months, three months, and greater is produced, 365. Heaven (caelum), to the Greeks oὐρανός, the etymology of whose Greek name is proposed, 258. Heaven generated, that is, created, 63. The first heaven contains all sensible and intelligible creatures, 258. The first heaven is not the firmament, 259. Whether heaven is the fifth body, 260, 261. The star-bearing heaven is taken by many for the unmoving sphere, 261. The first heaven, lacking stars, is not simple, 262. Heaven is composite, by a better composition, of a round figure, 267. Parts of heaven, 269. To the Peripatetics, heaven is ungenerated and incorruptible, 269. Heaven arose according to the opinion of Plato, 270. The first heaven, and the one lacking stars, what it is like, 375. How it was discovered, 378. Reddish and purple color, how it is made, 221. Coma or hair of stars, which appears around stars, is not in the stars themselves, 156. Coma or hair is sometimes moved together with the stars, sometimes not moved together, 156.
INDEX TO THE PHYSICS OF BLEMMIDA
A Cometa homonymy, 155. Constitution of comets, 157. Why comets are not so numerous, nor appear so frequently, and rather exist outside the tropics than within them, 157. Concretum and rigidum, what is meant by them, 132. Contingent, threefold, 30. Contraries, the first and supreme form and privation, 7. Contraries are either both species, or one falls very far from the other, 9. Which contraries are under the same genus, 10. Principial contrariety, what it is, 127. Contraries that come under the sense of touch, 128. Contraries are in contraries, 130. In a certain way fire and water are more contrary, in a certain way fire and earth are more contrary, 137. Generation of crowns or halos, 238. When and how large a crown appears, 235. What it signifies, ibid. It congeals more rarely around the sun, 236. Why it does not vary in colors like the rainbow, 246. Often an entire circle appears, 247. The seven affections of bodies, 268. How they exist in round and non-round bodies, ibid. Corruption, what it is, 59, 81. Corruption is neither motion nor rest, 82. Crinita stella (hairy star), what it is, 155.
D. God is not going to change his work into nothing, but for the better, 272. God is the efficient cause of every creature, 34. The supreme cause of all motion, 106. The first and true artificer and creator, 102. The shortest day, 349. The longest, 351, 352. The increments of days and nights do not occur in equal accession, 352. The causes of the inequality of days and nights, 362. Natural diminution, how it occurs, 88. The divine numen, interminate, 259. And without parts, ibid. It is itself existence or being, ibid. It is free from all matter, ibid.
E. Ecnephias wind, what it is, 213, 214. Elementa and simple bodies, why they are so called, 127. With what qualities elements are informed, 133. How elements are generated from one another, 133. How elements are contrary, 134. The four elements, 136. The contrariety and kinship of the elements, 136. Weights of the elements, 137. The difference between elements and principles, 139. The four first and sincere elements are not given, but are only perceived by the mind, 140. And they are nowhere by themselves, 141. They either subsist or move circularly in their own places, 264. Straight motion is in the elements when they are still being generated, 263. Elemental fire, why it is called succensio or fuel. Entelechy, what it signifies and from whence it is said, 37. Being and non-being are spoken of simply, 17. The ten conjunctions of beings according to Pythagoras, 86. Exemplary cause, 25. Exhalation, twofold, 146, 190.
F. Fax (torch) of meteors, what it is, 148. Faculae often seem to fall from the clouds, 22. The firmament is of the same nature as the sun, 187; the extent from the firmament to the ignition is the greatest, 377. Flame, what it is, 205. Burning flame, 147. The color of flame sometimes appears different because of smoke, 221. Differences in rivers, 177. Springs and sources differ, 176. Whether springs have their beginning from the sea, 177. Form, a certain essence, 10. It is not an accident, even if it is said to be in a subject, 10. It is not properly a substance, nor is matter, 11. But things are more essential than essences; form, in what respect it is more essential than matter, 12. Form or perfect species, each is both being and non-being, 18. Form contains matter, as it is its extremity and end, 85. According to some, form is a secondary and lesser substance; according to others, it is called the first and proper substance, 135. Encomiums of form, ibid. Fortune is an efficient cause per accidens, 29, 30, in those B things which happen according to election, 30. Good fortune, ibid. Bad fortune, 24. Fortune is an enormous inconstancy 31. Fortune, in what things it is found, ibid. Lucky stones, to Protarches, ibid. Fossils, what are called, 253. Fovea (pit) of meteors, what it is, 222. Frustra (vain), what it is and how manifold, 32. Fulgur (lightning), what it is called, 212. It happens after thunder, ibid. Species of lightning, ibid. How lightning is made, 217. Why lightning is called Arges, ibid. Lightnings which are called heliciae and scapti, 218. Smoke, in Greek καπνός, which is also simply called exhalation, 146.
G. Generation, what it is, 57, 80. Double generation, 58. Generation and corruption are not properly motions, but only mutations, 76, 81. They are spoken of through contradiction, 80. Generation is not rest, 82. How generation simply and alteration differ, 257. What the difference is between offspring and work, 275. Hail, what it is and how it is formed, 170, 171. Differences of hail, 172.
H. Differences of habitations, 359. Periscii, ibid. Amphiscii, ibid. Heteroscii, ibid. Hiatus of meteors, what it is called, 222. The four seasons of the year, 346, 329. The horizon circle, which one it is, 298. Humid, what it is, 129. Homonymy of the humid, 131. What is simply humid, 132. Humectum (moistened), what it is, 131.
I. Elemental fire is also called succensio, 138, 377. Elemental fire and our usual fire differ, 138, 144. Ignis qui excernitur (fire which is separated out), how it moves, 151. The motion of perfect fire is circular, 263, 265. The igneous and white when seen through black or in black displays many differences of colors, 221. Shower, how it is made, 163, 165. Shower and dew differ, 167. Infinity, five meanings of, 118. Infinitude, in what things it is present, is known in potentiality, 121. Infinitude is not in the world in act, 122. The intermediate obtains the relation of a contrary to both extremes, 77. Cause of the rainbow, 238. How the rainbow is made, ibid., 240. The first circumference of the rainbow, 240, 241. The second, ibid. The third, 241. The quantity and order of the rainbow's circumferences, 241. Whence the yellow color of the rainbow, 242. Often two rainbows are made by the sun, 243. How the second rainbow is made, 245. When the rainbow appears, 248.
L. Labyrinth, why it is infinite, 119. Lake of meteors, what it is, 160, 5. Milky circle, how it is made, 158. It is the greatest and oblique circle, 159. Lacunae or marshes, what are meant, 180. Laelaps wind, what it is, 200. Motion (latio), what it is and how manifold, 53. It is the first and most proper of all movements, 54, 55. Motion in an oblique direction is mixed motion, 152. Circular motion is the only perfect one, 266. Definition of place, 107. Place is like a vessel which cannot be moved, 107. Near place, 108, 112, 3. Another definition of place, 108. Double place, pertaining to nature and by accident, 109. How things moving to a place are in a place, and how they are not in a place, 111. Visionary light has much familiarity with external light, 231. The moon is σελήνη in Greek, whose etymology is handed down, 314, 391. What the body of the moon is like, 286, 312, 376, 391. The moon, falling into the earth's shadow, suffers eclipse, 323. Total eclipse of the moon, 323. Partial, ibid. Porisms of lunar eclipse, 326, 395. Conjunction of the moon, 318. Generation, ibid. Rising, ibid. Period of the moon, 318. How the moon illuminates, 312. What is most proper to the moon, 313. Appearances of the moon, 315, 316, 319, 392.
A Modes of lunar increase and decrease, 315. Not one and the same part is always illuminated, 314, 392. Shortest lunar month, 321. Longest, ibid., 12. Size of the moon's shadow, 365. The moon is smaller not only than the sun but also the earth, and by how many times, 365.
Madens (moistening agent), what it is called, 131. Why the sea does not flow away, 160. It is not without a principle, 182. Why it does not become greater through inflowing rivers, 183. Why it does not become sweeter or more bitter, 183. The location of the sea is simply the location of water, 183. Causes of saltiness and bitterness, 183. Matter, what it is, 7. Matter is subject to form, it is not opposed to it, 8. In what sense matter is more substance than form, 12. Matter is called non-being by accident, 17. Matter is being by itself, ibid. How matter is known, 18. Plato called matter great and small, 19. Matter, what kind of body it is, 20. Matter has its being in this, that it is potentiality, 20. How matter is subject to generation, and how it is not subject, 21. How matter is devoid of alteration, 22. Matter does not exist separately, 81. Four measures, 115. The mind is the eye of the soul, 375. How minds are embodied and materialized, and conversely, how they are devoid of body and matter, 258.
Mercurius (Mercury), names and motions, 286, 390. Meridional circles, what they are, 359. B Metabole (change), what it is, where it is said to come from, and in what it is considered, 76. Metallics, what they are and how many kinds there are, 254. Motion is also perfect act, 36. Definition of motion, 37. What kind of entelechy motion is, 38. Motion is an imperfect act, ibid. Motion is a certain passive act of that which is in potentiality, 39. Motion is not in that which moves, but in that which is moved, 42. Motion is the same as both action and passion, 44. The category of motion, ibid. Motion is considered in four categories, 53. Motion is equivocal, 54. Motion according to place is the first of all motions, 54, and local motion is prior to generation and corruption, 57, and to qualitative generation, ibid. Local motion is threefold, 58. Motion is out of opposites and takes place into opposites, 59. What continuous motion is, 60. The end and the beginning in motion are devoid of divisions, ibid. No motion upon a straight line is infinite, 62. Animal motion is not uniform, 64. Motions that can be compared, 66, 67. Motions differing in genus, 66. Motions differing in species, 67. Motions differing in number, 67. Every motion has a contrary rest and motion, 68. To every motion that is one in number, both the rest preceding the motion and the rest following the motion are repugnant, 68. What contrary motions are, 69. C Local motions are properly three simple ones, 69. The natural motion of a simple body is simple, 70. Rectilinear motion, in so far as it is not contrary to circular, 70, and in so far as it is contrary to the same, ibid. Motions are opposed to motions and to rests, and again, those rests themselves are opposed to one another by reason of contrary places, qualities and quantities, 72. Motion is opposed to motion in one way, and to rest in another way, 72. Principles of motions: God, soul, and nature, 106. Motion according to place, of what kind, 111. Duplex motion, 115. Circular motion is prior to all local ones, 58. It alone can be continuous, 59. It can be infinite, 61. It cannot be compared to a straight one, 66. Circular motion is uniform, 64, 65. Things that are moved upon a straight line are moved non-uniformly, 64. What to be in motion is, 61. World, what it is, 368, 370. Change in a certain respect and simply, what it is, 78. Change extends more widely than motion, ibid. Changes by accident are certain generations and corruptions, 83. Change into better is called generation; change into worse is called corruption in all predicaments, 84. Void in change, ἀμεταβλησία (unchangeableness), what it is, 83.
Natura (nature) according to Plato is an organic cause rather than an efficient one, 4, 58, 93, 102. In natural things, form and end are the same, 28. Nature carries out all things antecedent to the cause of form, 28. Definition of nature, 91, 102. The cause of nature is God, 92. Nature acts according to reason, ibid. Nature and according to nature differ, 95. Why nature sometimes errs, 96. "Beyond nature" and "above nature" differ, 96. Whether nature is matter or form, or a composite, or the very production of a natural thing, 98. The name of nature, which in Greek is φύσις, and its concept differ, 99. Analogy of nature and the art of sculpture, 99, 100. Nebula (mist), what it is, 160, 168. An indication of clear weather rather than rain, 164. How it is made, 168. The nerves of the eyes are hollow and canaliculated, 228. Niphetos (snowfall), what it is, 169. Snow, what it is and how it is made, ibid. Clouds, what they are, 168. Non-uniform density of clouds, 212. Number is twofold, ibid. That which is numbered is likewise twofold, 113. Now, what it is and how manifold, 116. Nutrition and augmentation, when they are together, when nutrition only, and when nutrition and diminution occur together in a vegetable body, 90. Not all nychthemera (days and nights) are equal, strictly speaking, and why, 355.
Oculorum spiritus (spirit of the eyes), lucid and clear, 228. Optical theorems, 240-244, 252, 304.
Parallel circles are five, 287. Parhelia (mock suns), how, where, and when they occur, 252. The Father is the efficient cause of the Son in natural generation, 3. In divine generation, the Father is not the efficient cause of the Son, but is purely essential, ibid. Perioeci, who they are, 336. Common and different aspects of the perioeci among themselves, 360. Rain, what it is, 163, 169. Poles, what they are, 284. The Pole star, in how far it is mobile, in how far immobile, ibid. For those living under the north pole, the day is longer than the half-year, 365. Potestate (τῷ) (in potentiality), what it is, 26, 39, 45, 274. Potestate (τῷ) is twofold, 46. Potentia (τῷ) (the power/potentiality) and potentiality differ, 45. Terrestrial prester (whirlwind), 200. Igneous prester, 217. Principle is said in many ways, 3. Other meanings of principle, 5, 6. The principle of an animal is the heart, 5. The principle of time is the now, ibid. The principle of motion is the cinema, ibid. The principle of any continuous thing is twofold, ibid. Principle and cause of natural bodies, 6. Three principles, 7, 16. Privation is a principle by accident, 8. It is twofold: logical and physical, ibid. Privation and form struggle by the opposition of contraries per se, 12. Ignorance of privation removes the generation and corruption of natural things, 16. Privation is non-being per se, 17. Being by accident, ibid. Hoarfrost, when, how, and where it is made, 166. What hoarfrost is, 166. Psecas (drop of rain), what it is, 163. Use of wells, 180.
Quantitatis (concerning quantity) and that which is devoid of division, 116. Rest, what it is, 9, 48, 60. Rest is not a station, 68. Rests are opposed to each other as extremes, 12. What it is strictly called to rest, 48.
Remigatio (oarage/propulsion), 213. Dew, what it is, 169. How and when it is made, 166. Semi-frozen dew, drosopachne, 169.
Scaturigines (springs) flow forth from mountains, 176. Secretion is better than concretion, 86. How sensation is in sentient beings, 42. Of sensibles, some can be seen, some cannot be touched, 127. Dry, what it is, 130. Homonymy of the dry, 132. What the simply dry is, ibid. Signs, what they are, 288, 393. Names and characters of the signs, 292. When the sun reaches the individual signs, ibid. Division of the signs into thirty parts, and the subdivision of one thirtieth part into sixty first-minutes, and of one first-minute into another sixty seconds.
C ulterior division and so on, 393. The signs are not of one and the same temperament, 297. There are always six signs above the horizon, 330. Site is twofold, 108, 112. What the site of that which is moved is, 119. What kind of star the sun is, 376. It is the cause of contrary passions by its motion, 165. How it is moved, 289. The Earth is greater, and indeed more than one hundred and sixty-six times greater [than the moon], and has other colors, and why, 308. Where the sun is higher, there the moon is nearer to the earth, 320. By its double motion, it causes days and nights, and the hours of the year, 345. It does not traverse the equal parts of the zodiac in equal time, 354. In which signs it lingers longer, 355. It is more than seventeen times as distant from the moon as the moon itself is from the earth, 313, 376. How an eclipse of the sun occurs, 304, 303. When a total eclipse of the sun occurs, 365. A particular [eclipse], of Christ, ibid. How the magnitude of the sun is discovered, 307. How the parallel circles of the sun are disposed, 346. They are changed according to the inclination of the world, 348. What the solar circle is, 289, 379. It is eccentric to the zodiac, 354. Why and how those who are occupied with the solar light for a long time are injured in their vision, 232. What kind of mirrors of the clouds are, 227, 239, 240. Division of the spectres appearing in the sky, 129, 225. The sphere is the first of all solid figures, 267. The spheres of the planets move both according to and above nature, 70. What wandering spheres are, 281. How they are moved, 283. The spheres of the seven wandering stars, the planets, are eccentric, 320. Which, among the spheres that are carried by a motion contrary to the first sphere, is the perfect one, 296. What the sphere *aplanes*, or the unwandering [sphere], is, 281. What squalor is, 204. Rainy years succeed squalid ones, 164. What pools are, 180. The difference between pools or lakes, ibid. Station is an act, 68. What a bearded star is, 135. Shooting stars, 148, 149, 151. All stars are dense and bright, 281. They have a spherical figure, D and are turned according to the opinion of Plato, 282. Division of the stars, 376. The unwandering stars move by three motions, 283. Likewise also the wandering ones, 284, 378. Why they are called wandering stars, 283, 378. They are not fixed in the firmament, 377. They are not moved in an unorganized manner, 289. They are moved flexuously and tortuously, ibid. They change the solar circle, 290. They are depressed sublimely and depressed humbly; they are lifted humbly and lifted sublimely, ibid. They are configured to one another by five configurations, ibid. They recede to any interval from the sun, except for Venus and Mercury, 292. They make a conjunction with the sun at different times, ibid. The houses of the wandering stars, 297. Exaltations and dejections, and adversities, 297, 299. The order and periodic motion of the wandering stars, 285, 390. Why rising and setting stars appear crimson, 221. What the *strobilus* (whirling) wind is, 200. By what other names the subsolanus (east wind) is called, 194. How it is to be understood that there is nothing contrary to substance, 11. Substance is said by reason of intention and remission, 11. What succession is, 144, 147, 377. The division of succession, 145. What kind of shadow the inhabitants of Syene have at the time of the summer solstice, 308.
T Tactus (touch) is the first of all senses, 118. What things are said to touch one another, 127. What time is, 112, 113. Time is the measure not only of motions but also of rest, 114. Why time is a number, 115. The division of time, 116. What present time is, ibid. The parts of time are primarily of eternity, 270. The Earth holds the status of a center relative to the firmament, 329, 330, 333. And also relative to the solar sphere, 331. But not also to the lunar sphere, 332. It is of an orbicular figure, 333. Its parts are five, which they call zones, 335. How great is its circumference, 339, 341. How great its diameter is, ibid. How an earthquake occurs, 201. And when, 202, 203. They happen also in squalid and rainy times, 204. An earthquake is a trembling motion, 203; an earthquake is similar to a pulse and palpitation, ibid. There are several species of earthquakes, 207. Analogous motions of the earth occur also in the sea, 208. In Thule the longest day is monthly, 364. And the summer tropic coincides with the arctic, 366. What *thyella* (storm) is, 199. What thunder is, 211. The sounds of thunders are various and disparate, 212.
U Shadow is cup-shaped, cylindrical, conical; the shadow of the earth is conical or turbinate, 303. The shadow of the earth rotates together with the sun, 360. The shadows of bodies illuminated by the sun are carried around with the shadow of the earth, ibid. One and the same thing is the cause of contraries, 12. One and the same thing is said to be both being and non-being in a different respect, 18.
V What a vacuum is, and how many kinds there are, 367, 368, 371. A vacuum does not exist in the world, 368. What vapor is, 147, 161. The double place of vapor, 163. It is not carried aloft unless there is a clear sky, 166. The names and motion of Venus, 285, 390. The matter of the winds, 195. The winds are at their least there where they begin to blow, 193. The motion of the winds is oblique, 194. The twelve winds, 194. Which winds are serene, 193. Humid, dry, snowy, sultry, lightning-bearing, haily, *ecnephia* (stormy) or tempestuous; and others, ibid. Northern, ibid. Southern, ibid. *Apogai* (off-shore winds), *eucolpiae*, *typhonici*, *ecnephia*, water-bearing, having straight blasts, endowed with reflex blasts, *etesiae* or anniversary [winds], *ornithiae* or bird-bringing [winds], 199. Of those things which are seen in the sky and elsewhere also, some exist according to subsistence, others only in appearance, 232. That which is seen, even if it is splendid, can nevertheless exhibit an appearance of a different color, 233. Virtues and extremes, and extremes are contrary to one another, 72. How vision occurs, 226, 227. What things vision needs to be perfected, 232. Sight needs light even for external light, 228. Sight operates through corradiation or co-illumination, 232. Vortex, in Greek *δίνη*, what it is, 214, 216. The effects of a vortex, 216.
Z What the zodiac circle is, and why it is so called, 283, 392. It is divided into three circles, 288. It cuts the parallels unequally, 353. The five zones of the earth, 335. The division of the temperate zones, 336. The circumference of the zones is calculated also in the firmament, 294.