266 



INDEX 



corpuscular theory of mat- 

 ter, 26, 27, 41, 42, 44, no; 

 value of speculative hypoth- 

 esis, 43; continuity of mat- 

 ter, 46; his hypothesis does 

 not avoid former difficulties, 

 50; divisibility of matter, 

 119; definition of ether, 126; 

 electrical theory of mechan- 

 ics, 127; definition of the 

 atom, 129. 



Laws, difference between hy- 

 pothesis and, 104; continuity, 

 causal, 115. 



Leibnitz, invention of the cal- 

 culus, 5. 



Length, a function of motion, 

 169. 



Lewis, G. N., confusion of 

 fact and fiction, 112. 



Light, theories of, 19; Des- 

 cartes' s hypothesis, 92; its 

 velocity, an absolute con- 

 stant, 165 ; its ^ velocity in 

 vacuous and in occupied 

 space, 177; its velocity not a 

 maximum, 182. 



Limits of science, 113. 



Locke, on the sensations, 233. 



Lodge, Sir Oliver, the ether 

 as a medium for psychic 

 phenomena, 24; ether mas- 

 sive, no, 153; presidential 

 address on Continuity, 193; 

 his scientific credulity, 194; 

 his scientific confusion, 207 ; 

 his ideas of the ether as om- 

 nipotent and omniscient, 

 208; as a quasi-deity, 208; 

 as a soul-body, 209; his 

 speculations not logical, 209; 

 war between science and the- 

 ology, 210; as an example 

 of scientific dogmatism, 210. 



Lombroso, the imperfection of 

 the genius, 250. 



Lorentz, H. A., his corpus- 

 cular theory of matter, 26, 

 28, 41, 55, no, 130, 144; 

 properties of the ether, 56; 

 apology for the hypothetical 

 method, 57; ethereal stresses 



not realities, 109; contrac- 

 tion of matter, 160; ether 

 stresses, 161. 

 Lucretius, atomic theory, 73. 



Mach, Ernst, science of ener- 

 getics, 22. 



Mass, as an attribute of elec- 

 tricity, 64, 117, 135, 171; as 

 a fundamental unit, 145, 148, 

 153 ; Newton's conception, 

 155; as dependent on en- 

 ergy, 172. 



Mathematics, as a scientific 

 language, 71; its value, 150; 

 a paradox, 151 ; not subject 

 to the restrictions of science, 

 185. 



Matter, real and hypothetical, 

 17; continuous or discontin- 

 uous, 40, 44; modern defini- 

 tions, 50; identity of space 

 and, 82; fundamental attri- 

 bute of, 82; three primordial 

 kinds, 88; terrestrial, 96; 

 confusion with electricity, 

 no; its divisibility, 119; 

 true and sensible, 120; as 

 Ding an sich, 148; our con- 

 cept of, 150; as an ethereal 

 strain, 161 ; Poincare's defini- 

 tion, 205. 



Maxwell, J. C, theory of light, 

 19, 160; theory of electrifi- 

 cation, 25, 108; discredit of 

 vortex theory, 48, 131 ; ori- 

 gin of life, 117; nature of 

 the ether, 161. 



Mechanical, rise of principles, 

 5 ; theories have no criterion 

 of truth, 18; models do not 

 lead to discoveries, 37; the- 

 ories, their weakness, 62. 



Mechanics, dominance over 

 science, 4; axioms, 6; its 

 metaphysical basis, 12; the 

 only complete theory, 13; its 

 failure ^as a method, 146; 

 Newtonian, 154; the new, 

 159- 



Mechanistic idea of the uni- 

 verse, 8. 



