368 INDEX. 



Snake (black), its description, and food; are oviparous, v, 

 373. 



Snipe, a water bird of passage ; its description, iv. 340. 



Snow, inhabitants of places where fields are continually 

 white with snow, generally become blind before the usual 

 course of nature, i. 13. Its melting produces a constant 

 breeze, 295. 



Snow-slips dreaded by travellers ; a family in Germany lived 

 for a fortnight beneath one of these, i. 138. 



Sobbing is a sigh still more invigorated, i. 421. 



Soft-finned fishes, their description, v. 123. 



Soland-goose belongs to the northern islands ; in greatest 

 number on the Bass island, and subsists entirely upon fish, 

 iv. 375. See Gannet. 



Soldier-crab, like a lobster, without a shell; a native of the 

 West India islands; description, and descent from the 

 mountains, v. 174. 



Sonorous bodies ; those who make the tone of such bodies to 

 depend upon the number only, and not the force of its 

 vibrations, mistake an effect for a cause, ii. 35. 



Sore, name the hunters give the buck the fourth year, ii. 329. 



Sorel, the hunters' name for the buck the third jear, ii. 329. 



Sound, conveyed by air, is lost in vacua, i. 285. Sounding 

 bodies of two kinds ; unelastic returning a single sound, 

 and elastic rendering a succession of sounds ; undulations 

 in elastic bodies taken by the ear as one continued sound, 

 while, in reality, they make many, ii. 34. Those whose dif- 

 ferences can most easily be compared, are most agreeable, 

 36. Those musical most pleasing, which are most unex- 

 pected, 38. Laws of the reflection of sound not so well 

 understood as those of light, 41. Persons of a bad ear 

 often deceived as to the side whence sound comes ; trumpets 

 made to increase sounds, 42. 



Spalanzani, his experiments concerning the power of repro- 

 duction of animals, vi. 179. 



Spaniels, land and water, the offspring of the beagle, tran- 

 sported into Spain or Barbary, so altered, and converted 

 there; a dog of the generous kind, iii. 17. 



Spanish flies described ; their use in medicine, and as blisters. 

 See Cantharisy vi. 153. 



Sparrows, (house-sparrow) ; various birds of the sparrow kind ; 

 their food ; songsters of this class ; their migration, iv. 254. 

 A male and its mate, that have young, destroy above three 

 thousand caterpillars in a week, vi. 78. 



Sparrow-hawk, one of the baser race of hawks, iv. 98. Taught' 

 to fly at game, but little obtained from its efforts ; lately as- 

 serted, upon respectable authority, the boldest of all for the 

 pleasures of the chase, 107. 



Sparus, the sea-bream, its description, v. 120. 



