88 'The Principles of Part II. 



thod to do it. There are ferments for the 

 putrefactive fermentation, as well as for tke 

 vinous. Hence Stahl : Corpus in putredine 

 exiftenS) olio a putredine liber o facillime cor- 

 ruptlonem conciliat j quia illud ipfum, quod 

 in motu intejlino jam pofitum eft, alter urn qui- 

 efcens y ad talem motum tamen prodive, in 

 eundem motum intejlinum facile abripere 

 poteft. 



ANIMAL fubftances already putrefied, 

 fuch as ftale urine, human dung, the car- 

 cales of animals, &c. are the proper putrid 

 ferments. If the urine of horfes, and ftall- 

 fed cattle, is carried into proper refervoirs, 

 and there allowed to turn ftale, it will, if 

 thrown on the dunghill, very much quicken 

 the fermentation. 



PUTREFIED bodies are of a very vola-* 

 tile nature ; infomuch that if expofed to a 

 dry hot air, they continually diminifh in 

 bulk, until all the volatile parts being car- 

 ried off ? the remainder is found to be an 



