848 JAMAICA. 



beg to refer the inquifitive reader to the bulky colle^-^ion pubiifhed 

 by Su" Hans Sloanc, and the fupplemcntal labours of the ingenious 

 Dr. Browne, to whofe work I am largely uidebted for many of the 

 foregoing remarks and defcriptions. 



I have obferved no regular order in the difpontlon of genera and 

 Jpecies. An omiffion of this fort, I apprehend, will be readily ex- 

 CLifed; as the fubfequent index will enable every reader to find the 

 liibjea whofe qualities are defcribed in the catalogue. 



The fubftances next-mentioned may be taken colIe£lively with 

 the preceding ; though, for the fake of propriety, I have given 

 them a detached place diftinct from the vegetable tribe. 



251. Marine Salt 



Is eafily manufadlured, upon all the liilina's in this ifland, by ex- 

 folation. This article, as I have before-mentioned, was formerly 

 a very confiderable part of the annual export, till other commo- 

 dities. of greater profit were undertaken. Gn fome parts of the 

 coafts it is flill made, chiefly by coftion, for the ufe of a few parti- 

 cular eflates. In a large work, whether by exfolation in pans, or by 

 boiling (where a confiderable number of cauldrons are ufed), the 

 water maybe very conveniently thrown in, by means of a fmall 

 wind-fail pump. After being boiled to a granulation, it is flowed 

 Jn balkets, which are fufpended in an airy, fhaded place, to let the 

 bittern drain off; after which, \% is fit for confumption. 



252. Petrifying Water. 



?Many fprings in the mountains are of fo petrifying a nature, 

 that I have feen very excellent hones, made with pieces of hard 

 wood, properly fhaped and planed, then laid to foak in fuch water 

 for feveral montiis, until the ftony particles had lodged firmly in 

 the pores ; after which, they had all the appearance of real floiie, 

 and were made ufe of accordingly for fharpening razors and pen- 

 knives. 



273. Nitre. 



JLarge quantities might probably be obtained from thofe caves 

 where the bats have dcpofited their dung, as in the grotto of St. 

 Anne, where there arc many dozen cart-loads of this filth. The 



1 nitrous 



