INDEX. 



333 



Arabs, in the Van of Civilisation for 

 Centuries, 48. 



Arabs, the Precursors of Modern 

 Science, 49. 



Arago [Physicist], 228, 229, 234, 

 239, 241. 



Arantus, 62, 97. 



Archimedes, 22. 



Aristarchus, 23. 



Aristophanes ("Clouds" of), 13. 



Aristotle, 7, 9, 21, 39. 



Aristotle, Inductive Process of Re- 

 search, 10 ; Organon, 10 ; Syllo- 

 gism, II ; on Evolution, 12 ; the 

 Father of Inductive Philosophy, 

 12 ; on Natural History, 12 ; on 

 Physiology, 12; on Association 

 of Ideas, 13 ; on Astronomy, 13; 

 on Physics, 13 ; on Politics, 13; on 

 Psychology, 13 ; the Founder of 

 Science, 14 ; the Founder of the 

 Objective Method, 14; Correction 

 of Eudoxus' Discoveries, 13 ; on 

 Experience, Appendix I. ; on In- 

 duction, Appendix II. ; on the 

 Syllogism, Appendix III. 



Arithmetic, 44. 



Arithmetica infinitorum, 193. 



Armils (armillary spheres), 15, 23. 



Arnault de Villeneuve, 44. 



Artefius, Minerals, Soap, 41. 



Artificial System, 114. 



Artillery, 42 ; Moorish, 52 (note). 



Arts, Practical, 64. 

 the Plastic, 64. 



Aryan Languages, 152. 



Arzachael, Obliquity, 34. 



Asellius, 63, 97. 



Assamsh, Statistics and Topo- 

 graphy, 41. 



Asteroids, Discovery of, 207. 



Astrolabe, 15, 25, 42. 



Astrology, Importance of, 72. 



Astronomers, Discoveries of, see 

 Discoveries. 



Astronomy, 44, 61, 100, 198, 261, 

 269, 271, 272, 280, 281. 



Astronomy, Definition of, Appendix 

 AA. 



Astronomy, General Remarks on, 



215. 



in Chaldaea, 5. 

 in Egypt, 5. 



in Greece, 7-9, 13, 2O r 



21, 23-27. 



in Islam, 33-35. 

 Atmosphere, Density, 35 ; Height, 

 36 ; Refraction, 36, 37 ; Weight,, 

 103. 

 Atmospheric Laws, 272. 



Phenomena, 224. 

 Atomic Bombardment, 255. 

 Energy, 258. 

 Heat (Law of), 183. 

 Law, 283. 

 System, 179. 

 Theory, 179. 

 Weights, 183. 

 Atoms and Molecules, 258. 

 Attraction (Capillary), 36, 193 ; 



(Chemical), 219. 

 Attwood [Physicist], his Machine,, 



225. 



Authority in Islam and Christen- 

 dom, 45. 



Authors Consulted, xix. 

 Avenzoar, see Ebn Zoar. 

 Averroes,"Colliget" (medical work),, 

 Comments on Aristotle, In- 

 fluence of, Sun Spots, 39. 

 Aviaries, 43. 



Avicenna, " Canon " of Medicine, 

 38 ; Encyclopaedia, Fossils, Free 

 Inquiry, Geological Formations, 

 Medical Plants, Small-pox, 39. 

 Avicenna, Influence of, 39. 

 Avogadro [Chemist], his Law, 185. 



BABBAGE, 254. 



Bacon, F., behind his Age in 



Science, 108. 

 Bacon's "New Atlantis," 14; his 



Claim as a Natural Philosopher, 



108. 

 Bacon, R., 44, 52, 65, 72, 74, 75, 



270, 283. 

 Bacon, R., his Work, Discoveries, 



and Errors, 75 ; his Correct No- 



