MURIATES AND CHLORIDES. 



muriate of tin ; but it is not easily got in a state 

 fit for analysis. 



chloride of iy m T ne muriate of lead does not exist. When 

 acetate or nitrate of lead is mixed with a solution 

 of common salt, and the liquid concentrated some- 

 what, and then set aside, long white needle form- 

 ed crystals are deposited. These crystals have a 

 silky lustre. When examined before the micro- 

 scope, they appear to be flat four-sided prisms, 

 terminated by oblique summits. They have very 

 little taste ; and are very sparingly soluble in 

 cold water, though boiling water dissolves a con- 

 siderable quantity of them. When these crys- 

 tals were exposed to the greatest heat that I 

 could raise in my sand bath, they lost no weight. 

 When heated to redness in an open vessel, they 

 sublime almost entirely ; but, in a close vessel, 

 they may be heated to redness, fused, and con- 

 verted into plumbum corneum, without any loss of 

 weight. This plumbum corneum is a chloride 

 of lead, composed of 



1 atom chlorine . . 4-5 



1 atom lead . 13 



17-5 



chlorides ig t Neither of the oxides of mercury is ca- 



of mercury. ... 



pable of uniting with muriatic acid ; for both 

 calomel and corrosive sublimate are chlorides. 

 It is needless to enter into any details respect- 



