INDEX 



463 



384, 388, 393, 394, 396, 397, 398, 

 425-8, 436, 437, 442-8, 449, 450, 

 451, 452, 453, 454, 455, 460. 



Einstein, A., 28, 183, 206 and n., 

 309 n., 379, 382. 



Elliot, H., 460. 



Empirical foundation of symbols, 

 237, 240; difficulties in ascertain- 

 ing, 243-5. 



Empirical necessity, 354-5. 



Empirical space, 289-96; anisotropy 

 of, 295-6; discreteness of, 291— 3|; 

 finitude of, 293-4; non-homoge- 

 neity of, 294-5; plurality of, 291; 

 relativity of, 289-90; transforma- 

 tion into scientific space, 296-303. 



Empirical time, 289-96; anisotropy 

 of, 295-6; discreteness of, 291-3; 

 finitude of, 293-4; non-homoge- 

 neity of, 294-5; plurality of, 291; 

 relativity of, 289-90; transforma- 

 tion into scientific time, 296-303. 



End-object, 90-102; change of loca- 

 tion of, 107-9; changes in, 105-7, 

 109-10; control of, 104-9; known 

 only potentially, 106-7; see Phys- 

 ical medium. 



Enriques, F., 195. 



Entropy, 373, 374. 



Euclidean space, 24-5, 281-9, 317; 

 continuity of, 282-4; derivation 

 from empirical space, 296-303; 

 homogeneity of, 285-6; infinity of, 

 284-5; isotropy of, 286-9; objec- 

 tivity of, 281-2; singleness of, 282. 



Event, 50. 



Experimentation, 107, 225-7, 229. 



Explanation, 186; as implication, 200; 

 as greater familiarity, 200-2; as 

 purely verbal, 202-4; in descrip- 

 tive science, 144-5; nature of, 197- 

 205; types of, 204-5; and descrip- 

 tion, 197-200; and realism, 203-4; 

 and verification, 198; vs. descrip- 

 tion, 8-11. 



Explanatory science, Chap. X; also 

 descriptive, 205-7; constituents of, 

 205-6; distinguished from descrip- 



tive science, 198-200; examples of, 

 196; explanation in, 212-3; exten- 

 sional features of, 204-8; high 

 integration of, 208-10; intensional 

 features of, 208-13; and symbolism 

 of obscurely given, 207-8. 

 Extension; of classes, 122; of symbols, 

 66-7; and descriptive science, 130- 

 9; and explanatory science, 205-8; 

 and intension, in descriptive 

 science, 142-3; and intension, in 

 explanatory science, 210-1. 



Faraday, M., 73, 175, 176 n. 



Fictionalism, 148, 158-67. 



Fine, H. B., 267 n. 



Flint, R., 38, 408 n., 417. 



Force, 323-7; as quantitative, 327 

 difficulties in discussion of, 323-4 

 empirical foundation of, 324-7 

 measurement of, 333-6; opera- 

 tional definition of, 331-7; psycho- 

 logical or objective, 325; relation 

 to events and motion, 325-7; 

 scientific content of, 327-31; and 

 Newton's laws of motion, 328-31. 



Frequencies, statistical, 362-3. 



Function, 368. 



Functional correlations, 368-74. 



Gauss, K. F., 176. 



Generalization, 268, 356-7; see Ab- 

 straction. 



Given, the, 53, 56-7; as variable, 131- 

 4, 243; controversies about, 438-9; 

 -necessity of inference from, 439- 

 40; see Data. 



Gladstone, J. H., 176 n. 



Goethe, 433. 



Gore, G., 176 n., 194. 



Gutenberg, 180. 



Haldane, J. B. S., 389. 



Hamilton, W., 176. 



Hegel, 504. 



Heisenberg, W., 28; principle of inde- 

 terminacy, 106, 378-9, 382, 419, 

 421, 432, 433, 434. 



