022 Foreign and Miscellaneous Intelligence. 



sorption of ammonia by the chloride of calcium was very rapid at the 

 beginning of the experiment, but it took a long time before the ab- 

 sorption was terminated. The compound is a white powder of about 

 twenty times the volume of the chloride, and completely soluble in 

 water; 0.99 parts of the chloride combine with 1.186 parts of am- 

 monia, or 100 parts of the former with 118.96 of the latter, so that 

 the compound may be considered as consisting of 1 atom of chloride, 

 and 8 atoms of ammonia, equal to 100 parts of the former, and 122.80 

 of the latter. 



Chloride of Strontium and Ammonia is very similar to the com- 

 pound of the chloride of calcium ; 0.783 parts of the salt were found 

 to have united with 0.662 parts of ammonia, or 100 parts of the 

 former with 84.52 of the latter. This corresponds to 1 atom of salt 

 and 8 atoms of ammonia, or 100 parts of the former, and 86.88 of 

 the latter ; on being heated the compound emits its ammonia. 



Chloride of Copper and Ammonia. The combination proceeds 

 very rapidly at the beginning, but it continues a long time before 

 the chloride is saturated. The compound is blue, like the compound 

 of sulphate of copper and ammonia, and of much greater volume than 

 the chloride; 2.357 parts of chloride unite with 1.737 parts of am- 

 monia, or 100 parts of the former with 73.70 of the latter, which may 

 be considered as 1 atom of chloride, and 6 atoms of ammonia. 

 The solution in water is blue. If the compound is exposed to the 

 air, it loses its ammonia, and changes its colour to green ; on being 

 heated, it melts and becomes brown, evolving ammonia and muriate 

 of ammonia ; the remainder consists of chloride of copper. 



Chloride of Nickel very much increases in volume whilst com- 

 bining with ammonia ; the compound is a white powder with a slight 

 violet hue, consisting of 100 parts of chloride, and 74.84 of ammonia, 

 or 1 atom of the former, and 6 atoms of the latter. The solution in water 

 is of a bluish colour, and forms a deposit of the hydrate of the oxide 

 of nickel. Strong heat reduces part of the chloride with the evolu- 

 tion, first of ammonia, and then of muriate of ammonia. 



Chloride of Cobalt and Ammonia forms a voluminous white 

 powder, with a slight reddish hue ; the absorption is very rapid, and 

 takes place with evolution of heat ; 0.473 parts of chloride combine 

 with 0.248 parts of ammonia, or 100 of the former with 51.43 of the 

 latter. This corresponds with 1 atom of chloride, and 4 atoms of 

 ammonia, equal to 100 parts of the former, and 52.84 of the latter. 

 The solution in water is reddish-brown, and forms a deposit of green 

 oxide of cobalt ; on being heated, the compound emits ammonia, mu- 

 riate of ammonia, and water. 



Chloride of Lead and Ammonia combine very slowly, and without 

 any change of colour or volume; 15.15 parts of chloride were 

 found to have taken up 0.141 parts of ammonia ; which would cor- 

 respond to 2 atoms of the former, and 3 atoms of the latter, or 

 100 parts of chloride, and 927 of ammonia. 



Chloride of Silver absorbs but a small quantity of ammonia; 



