INDEX. 



613 



Oyster beds of France, 378. 



beds on Lake Fusaro, 376, 378. 



claires of Marennes, 380. 



cultivation, 375. 



eaters, 370. 



farms at Whitstable, 383. 



fishing 374. 



of different ages, 366. 



packing system, 378. 



Ovulum oviformis, and 0. cornea, 424. 

 volva, 425. 



Pacific Ocean, 3. 



Pagurus Bernhardus, 492. 



Pulinurus vulgaris, 487. 



Pallas on Alcyonia, 145. 



Pandore Oyster beds, 384. 



Paramecium aurelia and its parasites, 



105. 



Bursaria, 112. 



Parr, or young Salmon, 563. 



Parry's discoveries, 46. 



Patella cserulea, P. umbel la, 411. P. grana- 



tina, and P. barbata, 412. 



longicosta, ib. 



Paulin's submarine apparatus, 65. 

 Pearl fisheries, 255. Value of, 257. 



Oyster, 253. 



Pearly Nautilus, 447. 

 Pecten glaber, 386. 



Japonica, 387. 



opercularis, ib. 



plica, ib. 



pseudamussium, 386. 



Pectenidae, 385. 

 Pelagia noctiluca, 200. 

 Pelagic plants and animals, 61. 



rivers, 30. 



Pennatula spinosa, 141. 

 Pennatulidse, 139. 

 Pentacrinus, 271. 



caput Medusae, 272. 



Europseus, 273. 



fasciculosus, 271. 



Pectunculatis aureflua, 342. 



delessertii, ib. 



pectiniformis, 343. 



scriptus, ib. 



Perforated madrepores, 150. 

 Peyssonnel's discoveries, 126. 

 Phallusia grossularia, 310. 

 Pholades, or borers, 328. 

 Pkolas crispata, 329. 



papyracea, and P. melanoura, ib. 



Phosphorescence of the sea, 12. Causes 



of, 13. 



Phosphorescent chain of Salpse, 315. 

 Phyllactis prsetexta, 192. 

 Pbysa castanea, 399. 

 Physalia, 244. Its poisonous properties, 



248. 



Physical properties of water, 24. 

 Physophora hydrostatica, 234. 

 Pilchard.-", 585. Cornwall " huers," 



pilchard fishery, 586. 

 Pinna bullata and P. nobilis, 362. 



rudis and P. riigrina, 361. 



Pinnoctopus corolliformis, 466. 

 Pintadine pearls, 353. 

 Pipe-fish (Syngnatlms), 534. 

 Pipe-fishes (Fistularia), 607. 

 Plaice (Platessa vulgaris), 549. 

 Planorbis corneus, 398. 

 Pleuronectidae, 546. 

 Plumatella cristallina, 306. 

 Polar seas, 43. Expeditions to, ib. 

 Polyp and branch, 131. 

 Polypidom, 144. 



and Polypi defined, 116. 



Polypifera, 116. 



Polypiferous crust in Gorgons, 149. 

 Pomotouan Archipelago, 169. 

 Porites, 162. 



astroides, 147. 



furcata, 163. 



the 



Porpita pacifica, 233. 



Porpitse, 232. 



Portion of the disk of Physophora hydro- 

 statica, 236. 



Portunus variegatus, 488. 



Poulpe : Marvellous stories of the ancients 

 concerning, 460. Mandibles preserved 

 in the College of Surgeons, 461. 



Praya diphys, 243. 



Primitive generation, 106. 



Principal forms of Anodon, 340. 



species of Sea-anemones, 187. 



Propagation of Infusoria, 104. 



of Sea-urchins, 290. 



Protozoa, 71. Leuwenhoek's discoveries, 



ib. 

 Pteroceras, their origin, 439. 



chiragra, and P. lambis, 440. 



scorpio, and P. millepeda, 439. 



Pteropoda, 441. The organization, wings, 



or flappers, ib. 



Pulmonary Gasteropods, 396, 409. 

 Pupa uva, 409. 

 Pure water, 15. 

 Purpura, its reputation with the ancients, 



431. 



consul, 432. 



lapillus and patula, 432. 



Pyrosoma, 312. 



Raiadse, 510. 



Rarefaction in Polar seas, 59. 

 Rataria, 232. 



Ravages of the Teredo, 321. 

 Ray-fish, 513. 



Recuperative powers of Holothuria, 

 293. 



