INDEX. 



687 



Neuroptera, 347. 353. 442. 

 Nidamcntal capsules, 418. .565. 



glands, 564. 591. 632. 

 Noctua, 402. 

 Non-ganglionic chords, their function 



in Articulatii, 249. 307. 

 Notonimatu, 46. 

 Nuclcobranchiata, 574. 

 Nudibranchiata, 540. 573. 

 Nulligiada, 467. 

 Nullipora, 140. 



Obtected metamorphosis, 422. 424. 

 Octopod dibranehiates, 605. 

 Octopus, 611. 623. 629. 

 (Estrus Bovis, 425. 



Hominis, 425. 

 Onchophora, 119. 

 Onychoteuthis, 603. 612. 621. 

 Operculum, 146. 229. 279. 458. 529. 



543. 

 Ophiura, 190. 194. 197. 224. 

 Orbieulidae, 503. 

 Organic matter, 36. 



not sclf-subsistent, 37. 

 Organisation, defined, 1. 

 Organised beings, 2. 

 Orthida?, 502. 

 Orthoceratite, 595. 

 Orthoptera, 347. 352. 442. 

 Ostrapoda, 343. 

 Ova of Acalephse, 181. 



Annulata, 258. 



Arachnida, 459. 464. 



Bothriocephala, 73. 



Brachiopoda, 498. 



Bryozoa, 152. 



Cephalopoda, 633. 635. 



Cirripedia, 285. 



Crustacea, 336. 



Echinus, 208. 



Epizoa, 274. 



Gastropoda, 564, 565. 567. 



Insecta, 406. 419. 



Lamellibranchiata, 523. 



Polygastria, 32, 33. 



Polypi, 125. 135. 137. 



Rotifera, 52. 



Tajnia>, 73. 



Tunicata, 476. 478. 

 Oviparous generation, its final purpose 

 in Infusoria, 42. 



Pagurus, nei-vcs of, 308. 

 Paludina vivipara, 556. 

 Parthenogenesis, 15. 88. 133. 160. 

 Parthenogenetic animals, 13, 14. 78. 90. 



124. 128. 131. 136. 151. 178. 184. 



212. 253. 262. 324. 409, 480, 481. 



484. 

 Patella, 554. 



Pcai-1, 518, 



artificialmode of producing, 518. 



Pcctinibranchiata, 441. 574. 



PcdicellariK, 193. 202. 



Pcdicellina, 152. 



Pendularia, 118. 



Penella, 271. 



Peniculus, 267. 



Pentacrinus, 192. 223. 



Per-centage of Fossil shells in tertiary 

 strata, 576. 



Pholcus, 453. 454. 457. 



Phragmoconc, 598. 



Phyllopoda, 343. 



Physalia, 176. 



Physiological distinction between plants 

 and animals, 3. 5. 6. 



Physograda, 176. 189. 



Planaria, 85. 94. 



Plants, distinction from animals, 2 — 8. 



Pleistocene, 576. 



Pleurobranchus, 558. 



Pluteus, 215. 



Poison-glands, 347. 405. 4 6. 



Polierschiefer, 37. 



Polygastria, 16. Conjugation of, 29, 

 Classification of, 55. Generation of, 

 26. Mouths of, 29. Nucleus, or testis 

 of, 27. Ovarium of, 33. Sliells of, 

 19. Sleep, none in, 22. Stomachs 

 of, 23. Teeth of, 23. 42. Vascular 

 system of, 25. 



Polypi, 119. 



classification of, 155. 



Productidffi, 502. 



Psyche, 416. 



Pteropoda, 471. 535. 572. 



Pulmogrades, 162. 188. 



Pulmonaria, 469. 



Pulmonata, 541. 573. 



Pulmotrachearia, 468. 



Pupa, definition of, 422. 

 kinds of, 422. 



Pyrosoma, 482. 



Pyrosomidffi, 501. 



QuateiTiary compounds, 4. 7. 



Radiaria, 16. 



Radiata, 14. 



Ranatra, 366. 



Reparative power, 123. 272. 252. 323. 



434. 467. 561. 

 Reproduction of parts, 73. 123. 212.252. 



302. 323. 434. 476. 561. 

 Rcsph.atory organs in 



Acalcpluc, 164. 



Annuhita, 239. 



Arachnida, 455. 



Brachiopoda, 498. 



Bryozoa, 150. 



Cephalopoda, 588. 626. 



