INDEX. 



689 



Tape-worms, fertility of, 72. Geogra- 

 phical distribution of, 79. Metamor- 

 phosis of, 74. Migrations of, 75 — 77. 

 Larva of, 75. 

 Tffiiiia Solium, 67. 

 Tseniobranchiata, 501. 

 Tardigracla, 446.467. 

 Tectibranchiata, 573. 

 Tegeiiaria, 458. 461. 

 Teeth of 



Crustacea, 315, 316. 



Echinus, 204. 



Gastropods, 554. 



Leech, 230. 



Nereids, 231. 



Polygastria, 23. 



Eotifera, 47. 



Of bivalye shells; 515. 

 Tellina, 504. 

 Tenacity of life in 



Entozoa, 115. 



Infusoria, 53, 54. 

 Terebratula, 485. 502. 

 Teredo, 518. 521. 

 Termites, 428. 

 Ternary compounds, 4. 7. 

 Terricola, 265. 

 Tetrabranchiata, 578. 649. 

 Thecosomata, 572. 

 Tongue of Bee, 374. 



Cephalopods, 586. 618.621. 



Limpet, 554. 



Gastropods, 553. 



Whelk, 554. 

 Torj^idity, 54. 392. 

 Touch, organs of, 



Annulata, 227. 



Arachuida, 451. 



Bryozoa, 149. 



Cephalopods, 586. 618. 



Crustacea, 319. 



Epizoa, 272. 



Gastropods, 551. 



Insecta, 367. 



Lamellibranchia, 512. 



Pteropoda, 539. 



Tunicata, 474. 

 Trachearia, 468. 

 Tracheliastes, 271. 

 Trachelipods, 545. 



Transition from Radiata to Mollusca,472. 

 Tree- crabs, 322. 

 Trematoda, 59. 80. 117. 

 Trichina spiralis, 94. 117. 

 Trichocephalus dispar, 97. 

 Trilobite, 299. 313. 331. 

 Trophi, 373. 

 Tubicola, 265. 



Tubipora, 139. 

 Tubularia, 128. 

 Tubulibranchiata, 574. 

 Tunicata, 471. 473. 500. 

 Turrilite, 597. 



Unio, 526. 



Unity of organisation, defined, 644. 



Unorganised, compared with organised 



bodies, 2. 

 Urinary organs, 211. 317. 322. 381. 453. 



509. 560. 689. 625. 



Vanessa, 146. 

 Vascular system of 



Acalepha?, 169. 173. 



Anellides, 234 — 239. 



Ai-achnida, 453. 



Asterias, 197. 



Brachiopoda, 495. 



Bryozoa, 150. 



Cirripedia, 282. 



Crustacea, 317. 



Echinus, 205. 



Entozoa, 82. 



Epizoa, 272. 



Gastropoda, 559. 



Holothuria, 269. 



Insecta, 382. 



Lamellibranchia, 507. 



Nautilus, 587. 



Polygasti-;a, 25. 



Rotifcra, 48. 



Sepia, 624. 



Tunicata, 474. 

 Venous follicles of Cephalopods, 589. 



625. 

 Vermes, 10. 

 Vertebrata, 11, 12. 16. 

 Vesiculie seminales, 69. 87. 105. ?54. 

 284. 328. 390. 397. 461. 539. 561. 629. 

 Vibrio rugula, 19. 



subtilis, 19. 



tritici, 115. 

 Volvocina?, 8. 

 Volvox, 22. 28. 

 Vorticella, 18. 24. 



Webs of spiders, 458. 

 Wasp, procreative economy of, 426. 

 Wings of insects, 347. 352. Their ho- 

 mology, 355. 

 Whelk, 554. 563. 



Xiphosura, 298. 343. 



Zoa, 11. 

 Zoophytes, 15. 



THE END. 

 Y Y 



