£ 93 ] 



SECT VI. 



DireElions for colleBing and dijlingiiijhing 

 Foffil fubflanccs, including Salts, Earths, 

 Metals, and Inflammables. 



TO write particularly upon thefe obje&s of 

 natural hiftory is not the prefent defign, but 

 to give fuch general inftru&ions, as may affift a 

 traveller, in the choice of foffil bodies, till fuller 

 information can be procured, which the numerous 

 modern authors on thefe fubje&s afford. In the 

 arrangement adopted, I have principally had in 

 view that by Dr. Babington ; and his own and the 

 other references annexed to the defcriptive hifto- 

 ries, will point out the principal writers on the 

 fubje&s of difcuffion. 



The traveller fhould be furnifhed with flint and 

 fteel, and the mineral acids; at leaft with the 

 nitrous, and volatile acids ; a hammer alfo will be 

 necelfary, to break bodies too bulky to i>ring 

 away. 



A blow-pipe is likewife an ufeful article; by 

 blowing long and forcibly through fuch an inftru- 

 ment, upon the flame of a candle, by which the 

 point of the flame may be directed againft the 

 body to be examined, it will frequently difcover 

 whether it is a calcareous, vitrifiable, or refrac- 

 tory fubftance; and for greater precifion, experi- 

 ments 



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