Salts. 203 



alfo in the fait works at Sal/burgh. Earn. 

 Index 52. 



SPECIES XXV. 



Marine Epfom 



Alfo deliquefces; its folution does not 

 trouble that of nitrous or marine felenite, 

 but it caufes a cloud in the nitrous folution of 

 filver ; vitriolic acid makes no vifible preci- 

 pitate in its folution ; but all alkalis, even 

 the cauftic volatil alkali, precipitate its bafis* 

 it lofes its acid in a red heat. 



It is found in the fea in greater plenty than 

 any other fait, exept fea fait, i Bergm. 

 182, 



SPECIES XXVI. 

 Marine Alum. 



This fait has not yet been found * if it 

 exifts, it may be known by its deliquefcence 

 and precipitability by magnefia, pure or 

 mild ; the mild fhould preferably be ufed, as 

 it is moil foluble. 



SPECIES XXVH, 



