INDEX. 363 



oyster-shells found on five or six acres of ground near 

 Reading, in Berkshire ; shells found petrified in all the Al- 

 pine rocks, in the Pyrenees ; on the hills of France, Eng- 

 land, and Flanders; a floor, or pavement, of petrified shells 

 found in Kent ; shells always remaining in the deep ; easier 

 to believe fossil shells bred in fresh water, than that the 

 sea for a time covered the tops of high mountains ; petrified 

 shells found in one of the pyramids of Egypt, 39. Volumes 

 upon the subject of shells contribute little to the history of 

 shell-fish ; an idea of the formation of sea-shells and garden- 

 shells ; way of accounting for different colouring in shells ; 

 hint about the operation of nature in colouring shells ; they 

 assume every colour but blue ; the animal not solely the 

 agent in giving beauty and colouring to it ; stairs-shell, or 

 admiral-shell, not more precious for their scarceness than 

 pearls for their beauty ; collections of shells have their use ; 

 naturally classed by Aristotle ; places where shells are 

 found, and substances of which they are composed ; sup- 

 position that all earths, fermenting with vinegar, are com- 

 posed of shells, crumbled down to one mass ; what shells 

 most valuable ; sea-shells exceed land or fossil shells in 

 beauty ; some living land shells not inferior in beauty to 

 fresh-water shells, v. 199. Great variety of fossil or ex- 

 traneous shells ; different states of preservation ; every shell 

 the spoil of some animal, no matter how parted from the 

 sea ; Swammerdam's attention to testaceous animals almost 

 beyond credibility, 210. 



Shells, of the sea, scarce one met with entire and sound, and 

 why ; of all sea-shells the nautilus the thinnest and most 

 easily pierced, v. 226. All bivalved shells furnish pearls, 

 their insides resemble and afford mother-of-pearl, 24-1. 

 Some pierced by worms argue them food for such animals, 

 209. 



Shells, animal, of the armadilla or tatou, one of the most strik- 

 ing curiosities in natural history, iii. 224. Turtle-shells of 

 an amazing magnitude, v. 192. 

 Shepherd's dog, considered as the primitive stock from whence 



all the varieties of the dog are derived, iii. 10. 

 Shores, of all those in the world, not one so high as that of 

 the west of St Kilda, six hundred fathom perpendicular 

 above the surface of the sea, i. 234. Some on which the 

 sea has made temporary depredations, 239. 

 Short-heads, name given by sailors to the young of the whale, 



whilst at the breast, v. 39. 



Shoveler, species of the crane kind ; its food ; inhabitants of 



the Cape of Good Hope respect it as the ancient Egyptians 



did their bird ibis ; its nest and eggs, iv. 328. 



Shoulders, high in sickly persons ; people dying, are seen with 



their shoulders drawn up in a surprising manner ; women 



