74 A TREATISE ON THE CONNECTION OF 



expelled by heat, and very considerable benefit has been 

 experienced from its use, in promoting vegetation, when 

 mixed with dung, or compost dung-hills. It seems to 

 possess, when applied in moderate quantities, the septic 

 powers of sea salt, and thus to promote the complete 

 putrefadlion of dung. 



It is decomposed by fixed alkalis and lime, forming 

 therewith digestive salt of silvius, sea salt, and muriat 

 of lime. With ammoniac, or volatile alkali, it forms a 

 triplicate salt of easy chrystallization» 



MURIAT OF IRON. 



This salt seldom occurs in nature. It is highly inimical 

 to vegetation. It is decomposed by fixed alkalis, lime,. 

 and magnesia, forming digestive salt, sea salt, muriat 

 of lime, and muriat of magnesia. 



PHOS- 



