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. 3*9. 326, 327. 349. 

 281, 485, 519, 521. 



Strepsiptera, 213. 



Streptostylica, 114. 



Sturnella magna, 52. 



Stypolophus, 335. 



Stypolophus ivhitice, 339. 



Successional relation, 19, 62. 



Suidae, 69. 



Suo'fdea, 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 digit at a, 213. 



Systems of evolution, 13. 



Table of the characters of the mam- 

 malian skeleton, 139. 



Tachyglossus, 135. 



Taeker, 195. 



Tahitian, 168. 



Tapir, 313. 



Tapiridae, 318. 



Tarsipes, 146. 



Tarsius, 155, 306. 



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

 pus of, 



Ta.xidea amcricana, 50. 



Teeth, evolution of, 318, 522. 



Teidae, 123. 



Teleology, 20. 



Teleostomata, 91, 99, roo, 101, 336. 



Tellkampf, Dr., 241. 



Terebratellidae, 178, 179, 180. 



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 Sphix, 68. 

 Thylacinus cynocephalns, 22. 

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

 Tomes, 381. 



Totiiitherium rostratum 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, in. 

 Tragulidae, 69. 

 Traquair, 99. 



Trias, 108, 113, 135, 184, 209, 325, 417. 

 Triboloceras, 186. 

 Trichea variety 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, 242. 



Tubularia mesembryanthemum y 456. 

 Tunicata, 172, 214, 218, 362. 

 Turbot, 499. 

 Tyndall, Prof., 476. 

 Typhlogeophis, 123. 

 Typhlogobius, 244. 



