MURIATES AND CHLORIDES. 



of nickel. The crystals, carefully dried on 

 blotting paper, are composed of 



1 atom muriatic acid . 4-625 

 1 atom protoxide of nickel 4-25 

 5 atoms water . . 5-625 



14-5 



When 14%5 grains of these crystals are heated 

 cautiously in a retort, they lose 6'75 grains of 

 water (equivalent to 6 atoms), and assume a 

 golden colour. In this state they constitute a 

 chloride of nickel, composed of 



ride. 



1 atom chlorine 4-5 

 1 atom nickel 3-25 



7-75 



When this chloride is exposed to the air, it ab- 

 sorbs moisture, and is gradually restored to its 

 original state of muriate of nickel. 

 Miniate of 13. Muriate of cobalt. This salt is easily ob- 



eobalt 



tained by saturating muriatic acid with carbonate 

 of cobalt, and concentrating the solution suffi- 

 ciently. When set aside, it deposites beautiful 

 garnet red crystals (probably rhombs, but the 

 shape could not be well made out), which deli- 

 quesce when exposed to the air. When these 

 crystals are heated, they melt in their water of 

 crystallization ; and, giving out water, the liquid 

 assumes a fine deep blue colour. If we continue 



