MURIATES AND CHLORIDES. 



weight in water, and precipitating the oxide of 

 zinc by an alkali, and the muriatic acid by nitrate 

 of silver. Its constituents are 



1 atom muriatic acid 4-625 

 1 atom oxide of zinc 5-25 



9-875 



If 9-875 of this muriate be very cautiously heat* 

 ed in a glass tube, it may be made to give out 

 chloride. 1.J25 O f W ater, equivalent to an atom. Of 

 course, it has become a chloride of zinc, com- 

 posed of 



1 atom chlorine . 4' 5 



1 atom zinc . . 4'25 



8-75 



This is the only muriate which I have met with, 

 except sal-ammoniac, containing no water of 

 crystallization. When chloride of zinc is heated 

 to redness, it fuses into a transparent liquid. In 

 a red heat it may be sublimed in the open air, 

 giving out a peculiar and not unpleasant odour. 



15 - Muriate of cadmium. A strong solution 

 of muriate of cadmium, committed to spontane- 

 ous evaporation, is gradually converted into a 

 mass of short, satiny crystals, somewhat resem- 

 bling asbestus. 25'29 grains of this salt, decom- 

 posed by carbonate of soda, gave 14*59 grains 



9 



