Intelligence and Miscellaneous Articles. 157 



Dr. Kane found the ammoniacal chloride of copper to be cm c^ + 

 2 NH3 + no. or correctly, NH3. n c^ -|- nhj. cm o. By heat NH3H0 

 is lost, and there remains NH3. h cm cl. By water there is generated 

 a new basic chloride of copper, having the formula cm c/ + 4 cm o 

 + 6 HO. The common Brunswick green cm c/ + 3 cm o + 4 ho. 

 Dr. Kane has obtained with 6 ho in place of 4 ho. and these oxy- 

 chlorides he considers as formed on the type of the ordinary chlo- 

 rides, combined with water, or with metallic oxides in other groups. 



1 — CM. c? + CM o + 2 (cm + 2 ho) 



2 — CM c/ -f 3 (cm + 2 ho) 



3 — cm c/ + cm o + 3 (cm + 2 ho). 



Dr. Kane has obtained another new oxychloride composed of cm 

 cZ + 2 CM o ; taking one atom of water, it remains brown, but with 

 more it forms a green powder, — the first replacing the third of cm o 

 in the common oxychloride. 



When No. 2 is heated, it loses all water, but if then put into con- 

 tact with water, it regains 4 ho, and becomes perfect Brunswick 

 green No. 1. cm c/f. cm o + 2 (cm o + 2 ho). 



The second equivalent of oxide is, in these chlorine bodies, much 

 less forcibly held than in the sulphates, but that it is differently re- 

 lated to the acid than the remaining equivalents of oxide or of water 

 is proved by a great- variety of facts. 



The ammoniacal nitrate of copper has the formula cmo NO5 + 

 2 NH3, or (NH3.H0.) NO3 + cm nHo. hence this body contains, united 

 with the copper, amidogen ; when heated it explodes, the copper and 

 amidogen burning in the nitrous oxyde yielded by the nitrate of am- 

 monia. To obtain some analogical evidence regarding this body. 

 Dr. Kane re-examined the ammonia- sulphate and nitrate of silver, 

 and found George Mitscherlich's results good. Dr. Kane, however, 

 writes the formulse 



1 — (NH3.H0). SO3 + Ag. NH2 



2 — (NH3.H0) NO5 + Ag NHjj. 



This last salt, when heated, gives a beautiful decomposition ; the ni- 

 trate of ammonia fuses readily, and at a temperature below that at 

 which it decomposes, the amide of silver is resolved into ammonia, 

 nitrogen, and metallic silver, which latter being deposited on the 

 sides of the glass, from the liquid nitrate of ammonia, gives a mirror 

 surface equal to that obtained by aldehyd. 



On analyzing the ammoniacal compounds of nickel. Dr. Kane 

 found the results of Erdman completely verified ; but from the in- 

 ferior afiinity with which the ammonia was retained, these com- 

 pounds did not yield as positive results as to their influence on theory, 

 as those of the copper class. 



A new substance, discovered in the course of these researches, 

 may be termed a fulminating copper. It is a blue powder, decom- 

 posed by heat into metallic copper, water, ammonia, and nitrogen. 

 Its formula is 3 cmo + 2 NH3. + 6 ho. 



The examination of the zinc compounds has led to the discovery 



