INDEX. 301 



changes its colour, and is at one time brown, at another 

 white ; time in which it is called the crost-fox, iii. 59. 



Isinglass, serviceable in medicine, and many arts ; manner of 

 making it ; principally furnished from Russia, where great 

 quantities are prepared surprisingly cheap'; Mr Jackson 

 found out a method of making a glue, that answered the 

 purposes of isinglass, v. 102. 



Islands, new-formed in two ways ; thirteen islands in the 

 Mediterranean appearing at once emerging from the water, 

 i. 108. One new-formed in the year 1720 near that of Ter- 

 cera, 111. Formed at the mouths of many rivers, and how ; 

 a beautiful and large one formed at the mouth of the river 

 Nanquin in China, not less than sixty miles long, and about 

 twenty broad, 113. Appear at first infinitely greater than 

 they naturally are ; seem to travel to the shore, and re- 

 present curious figures, ships with sails, streamers, flags, 

 and antique elevated castles, and at length vanish into no- 

 thing, 330. 



Juda goat common in Guinea, Angola, and all along the 

 coasts of Africa; not much larger than a hare, ii. 271. 



Jugular fish, name given to that fish which has the ventral 

 fins placed more forward than the pectoral, v. 117. 



Juniper, its shade said to be fatal, by the ancients, i. 278. 

 The Laplanders drink water in which these berries have 

 been infused, ii. 76. 



Ivory, the tusks of the babyrouessa are a very fine ivory, 

 smoother and whiter than that of the elephant, but not so 

 hard or serviceable, ii. 383. That of the morse more es- 

 teemed than that of the elephant, being whiter and harder, 

 iii. 272. Almost all our ivory comes from Africa, where 

 the greatest part is found in the forests ; the tusks of the 

 mammoth converted to the purposes of ivory, 355. Teeth 

 of the narwhal far surpass ivory in all its qualities, v. 49. 



Ivy-berries, shower of them raised by tempests in one coun- 

 try, and falling in another, i. S31. 



Kabossu, or Cataphractus, one of the largest kinds of the 



armadilla, iii. 231. 



Kamtschatka, description of its natives, ii. 74-. 

 Kanguroo, a singular quadruped of New Holland, described, 



iii. 4-12. 



Keratophites among the coraline fungi, vi. 199. 

 Kermes, an insect of great use in medicine and dyeing ; its 



description ; the differences of the male from the female ; 



the harvest of the Kermes greater or less in proportion to 



