OF FOSSILS. 



Be fi tics the acetous, which was the onl} r one 

 formerly known, it has produced to us already 

 the acids of fugar, forrcl, tartar, benzoin, citron, 

 amber, and feveral others. 



{ex. Animal Acids. 



THE animal kingdom is the poorcft of the 

 three; for except the acid of ants, and of fat, 

 we know of none other proper to it, although, 

 without doubt, it contains many highly deferr- 

 ing of notice. As for example, the acid which 

 the larva phakenac vinuhc of Linnaeus throws 

 out in its defence, clear as water, and colour- 

 lefs, which rcfcmblcs the concentrated acetous 

 acid in fmell and tafle, coagulates blood, and 

 thickens fpirit of wine ; reddens blue paper for 

 a fhort time; but the original colour returning 

 afterwards, affords proof of its great volatility *. 

 The fcarcity of this very fmgulur lujiior has per- 

 haps delayed fo long its farther invciiigation. 



5 cxi. Adds common to fercral Kingdoms of 

 Nature. 



OTHER acids arc common to all the kingdoms 

 of nature, as the phofliboric, which had been 

 falfcly amVncvl to the animal kingdom alone ; 

 but which has been found, though rarely, in the 

 foflil f , and in great plenty in the vegetable 

 R 3 kingdom. 



* Ocuvrcs do M. Bonnet, v. iii. 8vo, p. 28. 

 f ElTayS| vol. ii page 4:6. 



