INDEX. 



689 



Tape-worms, fertility of, 72. Geogra- 

 phical distribution of, 79. Metamor- 

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

 Larva of, 75. 

 Taenia Solium, 67. 

 Taeniobrancliiata, 501. 

 Tardigrada, 446. 467. 

 Tectibranchiata, 573. 

 Tegenaria, 458. 461. 

 Teeth of 



Crustacea, 315, 316. 



Echinus, 204. 



Gastropods, 554. 



Leech, 230. 



Nereids, 231. 



Polygastria, 23. 



Rotifera, 47. 



Of bivalve shells, 515. 

 Tcllina, 504. 

 Tenacity of life in 



Entozoa, 115. 



Infusoria, 53, 54. 

 Terebratula, 485. 502. 

 Teredo, 518. 521. 

 Termites, 428. 

 Ternaiy compounds, 4. 7. 

 Terricola, 265. 

 Tetrabranchiata, 578. 649. 

 Thecosomata, 572, 

 Tongue of Bee, 374. 



Cephalopods, 586. 618. 621. 



Limpet, 554. 



Gastropods, 553. 



"Whelk, 554. 

 Torpidity, 54. 392. 

 Touch, organs of, 



Annulata, 227. 



Arachnida, 451. 



Bryozoa, 149. 



Cephalopods, 586. 618. 



Crustacea, 319. 



Epizoa, 272. 



Gastropods, 551. 



Insecta, 367. 



Lamellibranchia, 512. 



Pteropoda, 539. 



Tunicata, 474. 

 Trachearia, 468. 

 Tracheliastes, 271. 

 Trachclipods, 545. 



Transition from Radiata to Mollusca,4 7 2 . 

 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 



Acalcph.T, 169. 173. 



Ancllides, 234 — 239. 



Arachnida, 453. 



Asterias, 197. 



Brachiopoda, 495. 



Brj'ozoa, 150. 



Cirripedia, 282. 



Crustacea, 317. 



Echinus, 205. 



Entozoa, 82. 



Epizoa, 272. 



Gastropoda, 559. 



Holothm-ia, 269. 



Insecta, 382. 



Lamellibranchia, 507. 



Nautilus, 587. 



Polygastria, 25. 



Rotifera, 48. 



Sepia, 624. 



Tunicata, 474. 

 Venous follicles of Cephalopods, 589. 



625. 

 Vermes, 10. 

 Vertebrata, 11, 12. 16. 

 Vesiculaj seminales, 69. 87. 105. 254. 

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

 Vibrio rugula, 1 9. 



subtilis, 19. 



tritici, 115. 

 Volvocinse, 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. 

 T T 



