6 A TREATISE ON THE CONNECTION OF 



been ascertained, but is supposed to be of an inflam- 

 mable nature. Marine acid is contained in sea water, in 

 salt rock, and in salt springs, combined with mineral 

 alkali, or soda, and with the earth of magnesia. 



The disengagement and separation of this acid, from 

 the alkaline basis with which it is united in sea or rock 

 salt, may be accomplished by various methods ; one only 

 has as yet been discovered and effected at an expence which 

 can admit a manufactory of alkaline salts being established 

 on an extensive scale. The accomplishment of this most 

 desirable object, by a cheap and easy process, must appear, 

 with respect to certain useful arts, as well as to the 

 application of it to agriculture, to be one of the most 

 important discoveries to which chemistry could have 

 lent its aid. 



PHOS- 



