INDEX. 



65; 



Oyster beds of France, 378. 



„ beds on Lake Fusaro, 388. 



,, claires of Marennes, 394. 



,, cultivation, 16. 



,, farms at Whitstable, 396. 

 Oyster fisheries, dredge employed in, 387. 



,, bank, artificial, in Lake Fusaro, 



388, 391. 

 Oysters, young, with locomotive orga7is, 

 376. 



Pacific Ocean, 3. 



Pagurus Bernhardus, 517- 



Pagurus Bernhardus, 518. 



Pal?emon, 525. 



Palinurus vulgaris, 511. 



P'llinurus vulga?-is, 512. 



Pa7-amecium aurelia and its parasites, 



97- 

 Paramecium aurelia and its parasites, 



102. 

 Parr, or young Salmon, 581. 

 Parry's discoveries, 42. 

 Patella barbata, 430. 

 ,, ccerulea, 430. 

 ,, granatina, 430. 

 ,, longicosta, 431. 

 ,, umbella, 430. 

 Patella Cisrulea, P. umbella, 429. 

 Pearl fisheries, 366. Value of, 367. 



,, Oyster, 364. 

 Pearly Nautilus, 472. 

 Pecten glaber, P. japoriica, P. opercu- 

 laris, P. plica, P. pseudamussium, 30S. 

 Pecten glaber, 401. 

 ,, japonica, 405. 

 ,, opcrcularis, 402. 

 ,, plica, 405. 

 ,, pseudamussium, 401. 

 Pectenidae, 308. 

 Pectunculus aureflua, Delessertii, P. 



pectiniformis, P. scriptus, 353. 

 Pectunculus aureflua, 352. 

 ,, Delessertii, 352 



,, pectenifortnis, 353. 



,, scriptus, 353. 



Pennatula phosphorea, 241. 



,, spinosa, 241. 



Pentiatula spinosa, 242. 

 PennatulidiE, 240. 

 Pentacrinus, 265. 



„ caput Medusae, 265. 



Pentacrinus, europasus, 269. 

 ,, fasciculosus, 264. 



Pentacrinus caput Medusae, 265 



,, europaus, 266. 



Perch [common], skeleton of, 528. 

 Perforated madrepores, 184. 

 Petromyzon, 534. 

 Peyssonnel's discoveries, 225. 

 Phallusia grossularia, 310. 

 Pholades, or borers, 326. 

 Pholas crispata, P. papyracea, and P. 



melanoura, 326. 

 Pholas c?-ispata, 327. 



„ dactylus, 325, 326. 



,, melanoura, 328. 



,, papyracea, 328. 

 Phorus conchyliophorus, 433. 

 Phosphorescence of the sea, 88. Causes 



of, 313- 



Phosphorescent chain of Salpce, 313. 



Phyllactis pr^texta, 215. 



Phyllcutis pmtexta, 2 1 6. 



Physa castanea, 416. 



Physa castanea, 417. 



Physalia, 140. Its poisonous proper- 

 ties, 143. 



Physalia utriculus, 148. 



Physophora hydrostatica, 136. 



Physophora hydrostatica, l^J, 139, 141. 



Picked dog-fish, the, 550. 



Pilchards, Cornwall, 599. " Huers,'" ib. 

 The pilchard fishery, 601. 



Pilchard, the, 600. 



Pinna bullata, P. nobilis, 371. 



Pinna bullata, 372. 

 ,, tiicrina, 371. 

 ,, nobilis, 372. 

 ,, riidis, 371. 



Pinnoctopus cordiiformis, 493. 



Pinnoctopus cordiiformis, 493. 



Pipe-fish (Syngnathus), 562. 



Pipe-fish, the, 563, 622. 



Pisa tetraodon, 507. 



Pisa tetraodon, 507. 



Plaice (commoft), the, 608. 



Plaice (Platessa vulgaris), 608. 



Planorbis comeus, 416. 



Planorhis comeus, 416. 



Pleurobrachia, 250. 



Pleuronectidre, 605. 



Plumatella cristallina, 305. 



Plumatella cristallina, 306. 



