INDEX 



465 



Laplace, 377, 423, 434, 435. 



Law, Chap. XVI; empirical founda- 

 tion of, 348-55; empirical neces- 

 sity of, 354-5; of coexistence and 

 of succession, 350-1, 368-9; opera- 

 tional definition of, 355-66; quali- 

 tative, 366-7; relation of to other 

 scientific concepts, 347-8; scien- 

 tific, 375-6; scientific content of, 

 366-76; statistical, 362-3; and em- 

 pirical correlations, 350-4; and 

 functional correlations, 367-76; and 

 indeterminism, 376-83; and nomic 

 necessity, 364-5; and probability, 

 359-63; and problem of induction, 

 358-68; see Correlation. 



Lenzen, V. F., 70 n., 334, 335 n., 336, 

 341, 345, 383. 



Leonardo, 433. 



Levy, H., 45 n., 106 n., Ill n., 114 n., 

 127, 437. 



Lindsay, A. D., 269 n., 280 n., 286 n., 

 288 n., 289, 322 n., 329 n., 335, 345, 

 367 n., 370 n., 373 n., 380 n., 383. 



Lobachewski, N., 24, 25. 



Locke, 224, 339, 409. 



Lodge, O., 73 and n. 



Logic of discovery, 181-9; existence 

 of, 181-2, 189; two problems of, 

 187. 



Logic of science, 34, part I; see Log- 

 ical structure of science. 



Logical positivists, 11-3, 148, 164-7, 

 170, 398, 440. 



Logical realism, 455-9. 



Logical structure of science, Chap. 

 Ill; clarity of, 45-6; importance 

 of knowing, 41-3; possibility of, 

 43-6; and scientists, 41-2; see 

 Science. 



Lotka, A. J., 244. 



Mach, E., 8, 74, 84-5, 102, 148, 164, 



167, 171, 335, 351. 

 Magnitude, 271. 



Margenau, H.; see Lindsay, A. D. 

 Mass, 331, 333-6, 343. 

 Mathematical idealism, 448-51. 



Mathematical operation, 264-5, 266, 

 268, 270. 



Mathematics, 24, 206, 246, 253, 267, 

 268, 270. 



Matter, 337-45 ; empirical content of, 

 337-41; operational derivation of, 

 343-5 ; relation of to measurement, 

 343-4; scientific content of, 341-3; 

 summary of discussion of, 345; 

 variety of meanings of, 337-8. 



Maxwell, C, 73, 219. 



McClure, M. T., 127. 



Meaning, 67-9. 



Measurement, 112-4; conditions for, 

 113-4; importance of in science, 

 356; in descriptive science, 137-8; 

 in explanatory science, 209; and 

 basic concepts, 246-8; and force, 

 332-3; and law, 349-50, 356, 365, 

 366-7; and matter, 343-4; and 

 motion, 317-8; and quantity, 274- 

 6; and space-time, 305-6, 308. 



Mental elements in perception, 90- 

 101. 



Metaphysics of science, 34-5 ; part II. 



Method of limits, 455-9. 



Meyerson, E., 133, 148, 172. 



Michelson-Morley experiment, 304, 

 308, 322. 



Mill, J. S., 127, 148, 171, 226, 230, 

 339, 351, 359, 371. 



Millikan, R. A., 396. 



Mill's methods, 226, 371. 



Mind, 224. 



Modified positivism, 148, 149, 150, 



- 158-67, 170. 



Montague, W. P., 102. 



Montmasson, J. M., 180, 195. 



Motion, 312-23; absolute or relative, 

 318-9, 322-3; empirical definition 

 of, 313; empirical foundation of, 

 313-6; operational definition of, 

 321-3; relation of to measurement, 

 317-8; relation of to particle, 317; 

 scientific content of, 317-21; sum- 

 mary of discussion of, 323; and 

 change, 315-6; and relativity, 313- 

 4; and quantity, 316. 



