INDEX 



Abstractive and hypothetical 

 methods, 13; outlined by 

 Rankine, 20. 



Action at a distance, 84, 134. 



Ampere, abstractive method, 

 190. 



Aristotle, continuity, 77; dic- 

 tator of Greek and medieval 

 science, 230; spirit of Greek 

 science, 231 ; ideas as logic, 

 231- 



Astronomy, its relation to hy- 

 pothesis, 76. 



Atomic, Kelvin's models, 36, 

 190; nature of electricity, 

 138. 



Atomic theory, defined, 8; its 

 axioms, 11; failure, 24; not 

 an aid to discovery, 33 ; in- 

 adequacy of, 44; modern and 

 classic, 49 ; its nature, 73 ; 

 its philosophical weakness, 

 119; its value, 130. 



Atoms, nature of, 10; Lar- 

 mor's definition, 26, 49; nec- 

 essary attributes, 44; sub- 

 divided, 44; modern concep- 

 tions, 129. 



Axioms, of atomic theories, 

 1 1 ; see Postulates. 



Bacon, Fr, natural philosophy, 

 121 ; province of mathemat- 

 ics, 142; on the sources of 

 knowledge, 233 ; on the ex- 

 tent and limit of science, 

 234- 



Biology, as the basis of ethics, 

 236. 



Bolingbroke, Lord, critique of 

 Descartes's cosmogony, 104, 

 144. 



Boscovich, atomic theory, 8. 



Bradley, discovery of the aber- 

 ration of light, 19. 



Browne, Sir Thomas, nature 

 of electricity, 108. 



Campbell, Norman, division of 

 past and present science, 39. 



Celestial matter, nature of, 90. 



Character, not the aim of sci- 

 ence, 229. 



Clifford, W. K., plurality of 

 ethers, n. 



Cohesion, cause of, Descartes, 

 92; Larmor, 127. 



Continuity and discontinuity 

 of matter, contrasted, 3, 119; 

 as a dualistic principle, 40, 

 44; ideas on, 77; its history, 

 77; conflict between, 78; in- 

 ability to decide between, 

 '43. 



Cosmogony, of Laplace and 

 Lagrange, 7; Larmor's, 47; 

 requirements for a scientific, 

 72; nebular hypothesis, 74; 

 as a scientific convenience, 

 80; Descartes's, 82 el seq.; 

 revealed and natural, 240. 



Coulomb, nature of electricity, 

 153- 



d'Alembert, laws of motion, 6. 

 Dalton, atomic theory, 33. 

 Darwin, law of evolution, 226, 



238. 

 Democritus, atomic theory, 8, 



73- 



Descartes, influence on science, 

 3. 5, 39. 40. 67, 101, 142, 224; 

 theory of matter, 40; the 

 plenum. 40, 78; example of 

 hypothetical method. 70; ex- 

 ponent of continuity of mat- 

 ter, 78; scientific principles, 

 79; revelation, 80; attributes 

 of substance, 82; action at 

 a distance, 84; laws of tno- 



263 



