546 PRIMARY FACTORS OF ORGANIC EVOLUTION, 



Sponges, 80. 



Sports, influence of, 24 



Spy, 159, 161, 163, 164, 165, 166, 169, 

 170. 



Squamata, 114, 115, 116. 



Squillidae, 273. 



Stahl, E., 501. 



Starch, 481, 



Statogenesis, 485, 496. 



Stegocephali, 88, 109, 172. 



Stegophilus, 103. 



Stentor, 250. 



Stereognathus, 325. 



Stevenson, C, 432. 



Strain, 305, 311, 313, 319, 326, 327, 349, 

 281, 485, 519, 521. 



Strepsiptera, 213. 



Streptostylica, 114. 



Sturnella tnagna, 52. 



Stypolophus, 335. 



Stypolophus nvhities, 339. 



Successional relation, 19, 62. 



Suidae, 69. 



Suoidea, 318, 324, 



Sus, 330. 



Symphysis mandibuli of a, chimpan- 

 zee, 164; gorilla, 164; liegois, 166; 

 orang, 164; Parisian, 166; Spy man, 

 164; Spy woman, 164. 



Synagodus, 59. 



Synapta digitata, 213. 



Systems of evolution, 13. 



Table of the characters of the mam- 

 malian skeleton, 139. 



Tachyglossus, 135. 



Taeker, 195. 



Tahitian, 16B. 



Tapir, 313. 



Tapiridae, 318. 



Tarsipes, 146. 



Tarsius, 155, 306. 



Taxeopoda, 128, 136, 146, 297, 357; car- 

 pus of, 



Taxidea atnericana, 50. 



Teeth, evolution of, 318, 522. 



Teidae, 123. 



Teleology, 20, 



Teleostomata, 91, 99, 100, loi, 336. 



Tellkampf, Dr., 241. 



Terebratellidae, 178, 179, r8o. 



Termites, 500. 



Tertiary, 184, 291, 421. 



Testudinata, 114, 115, 116, 119, 123. 



Texas, 50, 436. 



Theory of internal causes, 527. 



Theory of use and disuse, 3. 



Theriodonta, 115, 116. 



Thermochemistry, 483. 



Theromora, 88, 114, 115, 116, 120, 121, 



132. 

 Thoatherium, 359. 

 Thoraceras, 186. 

 Thoropa miliaris SphiXy 68. 

 Thylacinus cynocepkalus, 22. 

 Tillodonta, 140, 143, 145, 329, 360. 

 Tomes, 381. 



Tofnitherium rostratunt Cope, 156. 

 Topinard, P., 153, 155, 157, 168, 165. 

 Tornier, E., 283, 284, 528. 

 Tortoises, 114. 

 Tortricidae, 123. 



Toxodontia, 128, 143, 297. 330, 360, 382. 

 Trachycephalus, 198, 

 Trachypteridae, 108. 

 Trachystomata, 109, iii, 

 Tragulidae, 6g. 

 Traquair, gg. 



Trias, 108, 113, 135, 184, '2og, 325, 417 

 Triboloceras, 18G. 

 Trichea varia, 220. 

 Triconodon Owen, 343. 

 Triconodontidae, 318. 

 Trichophanes, 104. 

 Tridacna, 265. 

 Trilobita, 83. 

 Trimen, R., 231. 

 Trinil, man of, 159, 168, 169, 170. 

 Trionychidae, 303. 

 Tripteroceras, 186. 

 Tristichopteridae, 91. 

 Trityloden, 325. 

 Trivia, 260. 

 Trotting horses, 426. 

 Troglocaris, 243. 



Tubularia mesembryanthentunt, 456, 

 Tunicata, 172, 214, 218, 362. 

 Turbot, 499. 

 Tyndall, Prof., 476. 

 Typhlogeophis, 123. 

 Typhlogobius, 244. 



