XX 



LIST OF ILLUSTRATIONS. 



Mollusks — continued : 

 Petuneulus . 

 Pholas striata 

 Pinna . 



Ponlp (Octopus) . 

 Pteroeeras scorpio 

 Retepora eellularis 



. 302 

 . 302 

 . 305 

 272, 273 

 . 290 

 . 318 

 . 326 



Seylhea . . . .283 

 Sea-Hare, compound stomach 



of . ... 295 



Sepia .... 104, 275 

 Solen, or Razor-Shell . . 304 

 Strombus pes pelicani . . 290 

 Syllaea, gizzard of • . . 294 



Tiara 283 



Tridacna gigas . .. . 314 

 Whelk . . . .413 



Worm-shell . . .291 



Muscles and Electric Batteries of 



the Torpedo . . .202 



Nervous Axis of an Annelidan . 262 

 Noctilnca miliaris . . .419 

 Ova of the Cuttle-Fish . . 278 

 Protozoa : — 



Amoeba .... 379 

 Foraiiinifera . . .381 

 Halina papillaris . . 386 



Infusoria, marine . . 384 



Nummulina discoidalis . 378 

 Polycistina . . . .383 

 Sponges . . . .385 

 Tethea . . 385, 386 



Eeptiles : — 



Alligator Lucius . 173 



Reptiles — continued: 

 Tortoise 

 Turtle, Green 

 Hawk's Bill 

 Loggerhead 

 Water-Snake 

 Rocky Mountains at the bend of 



the Bear Lake River 

 Rotifera : — 



Conochilus volvox 

 Philodina roseola 

 Ptygura melicerta 

 Saw of the Saw-Pish . 

 Sea-Fowl Shooting 

 Skeleton of the Dugong 

 of the Perch 



of the Seal .... 

 of the Tortoise . 

 Skerryvore Lighthouse 

 Skull and Head of Walrus . 

 Skull of Whale, with the Baleen . 

 Surirella constrieta 

 Theoretic representation of the 



Circulation in Fishes 



Theoretic representation of the 



Circulation in Mammals and 



Birds .... 



Theoretic representation of the 



Circulation in Reptiles 



Torso Rock, near Point Leas 



Thomson, in the Arctic Ocean . 



Sockets with teeth, of Echinus 



esculentus .... 



TJrticating organs of Coslenterata 



174 

 170 

 180 

 176 

 183 



79 



268 

 269 

 267 

 100 

 168 

 118 

 188 

 119 

 174 



89 

 129 



98 

 402 



192 



175 



175 



33£ 

 346 



Water-Spouts 



69,70 



