INDEX. 



383 



some instances of, 176; not to be 

 ascribed to atmospheric errors, 177. 



Heavenly bodies, their changes, 175. 



Heavenly bodies, motion of, not evi 

 dence of their eternity, 178. 



Heavenly bodies may act on one ano 

 ther, 179. 



Heavenly bodies that straggle from ex 

 perience, Aristotle s theory that they 

 are not subject to heat, 180. 



Heraclitus, 26. 



Heraclitus, his theory that fire is the 

 one sole element discussed, 53. 



Heraclides, of Pontus, Elephantus and 

 Kicetas, of Syracuse, Philolaus, 

 their opinions of the universe, which 

 exploded the notion of a system, 

 163. 



Hero, explanation of an altar described 

 by him, 149. 



History, natural, the basis of natural 

 philosophy, 122. 



History, natural, chief cause of com 

 plaint respecting-, is that men have 

 erred rather in the mode of proceed 

 ing than in design, 124. 



History, natural, of things individual, 

 152. 



History, divided into natural and civil, 



152. 



History of generations, 157. 

 Hopes of the progress of invention and 

 discovery, 36. 



INDUCTION, what form of, should be 

 introduced, 42. 



Instauration, outline, argument, and 

 scope of the second part of, 106. 



Interpreter, qualities of the, 90 ; duties 

 of the, 91. 



Interpretation of nature, or the inven 

 tion of things and works, thoughts 

 and observations concerning, 16. 



Interpretation, impediments of, 89. 



Inventions of man which we possess 

 are very imperfect, and cannot be 

 ascribed to philosophy, 1C; caures 

 which repress inventions the belief 

 that all is impossible that is not 

 already found, 16 ; a greater apti 

 tude to admire the provisions of man 

 than to apprehend his wants, 18 ; 

 premature reduction into systems, 

 18 ; mistakes respecting the ends of 

 science, 19. 



Invention, the modes of, in use, re 

 viewed, 32. 



Invention, a general mode of, induce 

 ments to attempt its discovery, 33. 



Inventions, the value and efficacy of, 



effects produced in the condition of 

 the world by the invention of print 

 ing, gunpowder, and the compass, 

 35. 



Invention and discovery, their advance 

 ment a kindling of the desire to 

 effect it, 33 ; formation of hopes, 

 36; means of performance, 41. 



Inventions, the mode of communi 

 cating and transmitting them, 42. 



Invention and discovery, hopes and 

 prospects of their progress, 36 ; from 

 the operation of time, 36 ; from the 

 power of chance, 37 ; from trans 

 ferring and applying inventions al 

 ready known, 39 ; from the union 

 of the empirical and philosophical 

 means of arts and sciences, 39 ; from 

 the errors of times past, 40 ; means 

 of performance, general maxims 

 concerning, 40. 



KING S College, Cambridge, pheno 

 menon in, a wooden building there 

 containing bells, 244. 



Knowledge, not to be sought in the 

 obscurity of antiquity, but in the 

 light of nature, 99. 



LEARNING, human, divided into three 

 parts, 150. 



Light, topics of enquiry concerning, 

 82 ; presence and absence tables, 

 82 ; table of degrees, 83 ; colours 

 of, 83 ; reflexions of, 83 ; multipli 

 cation of, 83 ; modes of destroying, 

 84 ; operation of, 84 ; continuance 

 of, 84 ; ways and progress of, 85 ; 

 transparency, 85 ; cognations and 

 hostilities of light light compared 

 with sound, 86. 



Light, natural, aphorisms concerning 

 the kindling of, 87 ; helps of the 

 mind and kindling of natural light, 

 aphorisms and advice concerning, 

 87. 



Light, opinion of Telesius that com 

 mon air contains a quantity of, 181. 



Light and sound, the agreements and 

 disagreements of the phenomena of, 

 231, 235, 240, 241, 242, 243. 



Love, see Cupid. 



MAN, condition of, 89. 



Matter, quantity of, whether always 

 measured by weight, 128, 131. 



Matter, a table of the conjunction and 

 expansion of, in tangible bodies, with 

 a calculation of their ratios in dif 

 ferent bodies, 129 ; account of the 



