.358 



COSMC';!. 



♦ aluable tmnslatioiis from Greek, Syr- 

 iac, Indian, &c., 215, 217 ; their botanists 

 and school of medicine, 216 ; chemistry 

 and pharmacy, 218-220 ; astronomy, 

 221-224, 287 ; algebra, 225-227 ; general 

 results of their scientific researches, 

 227. 228. 



Arago on the magnifying power of Gali- 

 leo's telescope, 303 ; true method of 

 writing the history of science, 320 ; 

 « treatise on changing or periodic stars, 

 3.30 ,■ discovery of colored polarization, 

 332, 333. 



Archimedes, 179, 190; his " Catoptrica," 

 193. 



Argouautic expedition to Colchis, elucida- 

 tion of the myth, 144. 



Aristarchus of Samos, his correct knowl- 

 edge of the Earth's structure, 109 ; of 

 astronomy, 177 ; acquaintance of Co- 

 pernicus with his writings, 310-313. 



Aristobulus, 156, 158. 



Aristotle, noble passage on the effect of 

 natural scenery, 29 ; on Empedocles, 

 30 ; on Rameses the Great, 126 ; his idea 

 of the proximitj' of India to the Pillars 

 of Hercules, 152 ; on the advantages of 

 political unity, 154 ; his doctrines and 

 expositions, 160 ; Dante on, 160 ; his 

 "Historia Animalium" and "Meteoro- 

 logica," ieO-163, 192, 196 ; his zoologic- 

 al specimen^ and collection of books, 

 163 ; anatt-m!cal dissection, 162 ; his 

 school and leading followers, 163, 164 ; 

 important results of his teaching, 174, 

 175, 176 ; on the weight of the atmos- 

 phere, 194; Arabic translations of, 215; 

 letter of the Emperor Frederic II. on, 

 215, 216; influence of his philosophy in 

 Ihe Middle Ages, 242, 243 ; imperfect 

 ideas on attract on, 309, 310; inventor 

 of retrograde spheres, 315. 



Aristyllus, early Alexandrian astronomer, 



. 177, 178. 



Aryabhatta, Indian mathematician, 167. 



Astrolabes, use of, in navigation, 25.5-262. 



Astronomy, knowledge of, by the Chalde- 

 ans, 167, 168; Greeks, 166, 167, 176-179; 

 Arabs, 220-223 ; observations by the dis- 

 coverers of America, 285-294 ; applica- 

 tion of, to navigation, 255-262, 291-295; 

 brilliant progress from the discovery cf 

 the telescope, 301-307. 



Augustus, his collection of fossils, 195. 



Ausonius. descriptions of nature in his 

 poem "Mosella," 35. 



Australia, discovery of, 272, 273. 



Avicenna, Zoological History of, 216; 

 work on Materia Medira, 217. 



Avicnus, Festas, writings of, 134. 



Bacon, Lord, "Instauratio Magna," 316; 



conjectures on atmospheric currents, 



339. 

 Bacon, Roger, 43, 229. 211, 243, 318; his 



scientific writings and their influence on 



the extension of the natural sciences, 



244-246. 

 Balbon, Vasco Nunez de, his navigation of 



the Pacific, 266-269, 271. 



Banana the), the ai cna oi Pliny. 15i». 



Barometer, invention of, 338 ; bypsomcl 

 rical uses, 339. 



Barros, Johannes, Portuguese historiarii 

 writings of, 240, 272, 291, 293. 



Basil the Great, simple and beautiful de- 

 scription of Nature in his letter to Greg- 

 ory of Nazianzum, 40, 41 ; his Ilexaj- 

 meron, 41. 



Behaim, Martin, of Niimbera:, 239, 255, 269, 

 291. 



Bembo, Cardinal, his ^tna Dialogus, 34, 

 64 ; Historiee Venetee, 64. 



Berghaus, Professor, on the extent of the 

 Roman empire, 181. /■ 



Beriguardi, Claudio, first observed the" 

 pressure of the atmosphere at varying 

 altitudes, 338, 339. 



Bernaldez, Andres, MS. writings of, 26-5. 



Bhatti-Kavya, Indian poem, 53. 



Bles, Henry de, Flemish landscape paint- 

 er, 88. 



Boccaccio, a reviver of the study of clas- 

 sical literature, 248. 



Bockh on the "Adonis Gardens" of the 

 ancients, 91 ; on the knowledge of the 

 Pythagoreans of the "precession," 178. 



Bodner, Carl, fidelity of his drawings tc 

 nature, 93. 



Boethius, Geometry of, 225. 



Boiardo, smaller poems of, 64. 



Boreas, meteorological mj^th of, 147. 



Botanical knowledge of the Arabs, 211, 

 216; of the Mexicans, 274, 275. 



Brahmagupta, Indian mathematician, 187 



Brahmins and Brahminical districts, 169. 



Breughel, Johann, his fruit and flower 

 pieces, 90. 



Brewster, Sir David, on Kepler's method 

 of investigating truth, 327; important 

 discovery of the connection between 

 the angle of complete polarization and 

 the index of refraction, 332 ; on the date 

 of Newton's optical discoveries, 333. 



Breytenbach, Bernhard von, early travel- 

 er, 78. 



Bril, Matthew and Paul, Flemish land 

 scape painters, 88. 



Brongniart, Alexander, pala^ontological 

 researches of, 348. 



Bruchium, Library of, 175. 



Bucohc poetry, its characteristics, 28. 



Buffon, 75 ; deficiency of personal i bserv^ 

 ation in his writings, 75. 



Bunsen, Chevalier, note from his "Esypt," 

 125. 



Byron, Lord, his poetry, 76. 



Cabot, Sebastian, voyages and discovert* 

 of, 264, 265, 279, 280. 



Cabral, Alvarez, 240, 263. 



Cabrillo, Rodriguez, 230, 272. 



C*sar, Julius, writings of, 35, 38, 196. 



Calderon, dazzling descrii^tion of nature 

 in his writings, 73. 



Callimachus, gloomy descriptions of Na- 

 ture in his 'Hymn on Deles," 26. 



Cp.Uisthenes of Olynthus, 163, 164, 166. 



Camoens. faithful individuality of nature 

 in his •' Lusiad," and its inimitable d* 



