546 PRIMARY FACTORS OF ORGANIC EVOLUTION. 



Sponges, 80. 



Sports, influence of, 24 



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

 170. 



Squainata, 114, 115, 116. 



Squillidae, 273. 



Stahl, E M 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 ivhitite, 339. 



Successional relation, 19, 62. 



Suidae, 69. 



Suoldea, 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. 



Ta3ker, 195. 



Tahitian, 168. 



Tapir, 313. 



Tapiridae, 318. 



Tarsipes, 146. 



Tarsius, 155, 306. 



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

 pus of, 



Taxidea americana, 50. 



Teeth, evolution of, 318, 522. 



Teidae, 123. 



Teleology, 20. 



Teleostomata, 91, 99, 100, 101, 336. 



Tellkampf, Dr., 241. 



Terebratellidae, 178, 179, 180. 



Termites, 500. 



Tertiary, 184, 291, 421. 



Testudinata, 114, 115, 116, 119, 133. 



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, i2i ; 



132. 



Thoatherium, 359. 

 Thoraceras, 186. 

 Thoropa miliaris Sphix, 68. 

 Thylacinus cynocephalus, 22. 

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

 Tomes, 381. 



Tontitherium 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 van'a, 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 mesentbryantheniunt t 456, 

 Tunicata, 172, 214, 218, 362. 

 Turbot, 499. 

 Tyndall, Prof., 476. 

 Typhlogeophis, 123. 

 Typhlogobius, 244. 



