Dr. Kane on the Compounds of Ammonia. 63 



And the dry oxychloride, zncl + 9zo, absorbs four equivalents of water, 

 assuming nearly the condition in which it had been examined by Schindler. 

 The quantity of water found by analysis Is Intermediate between three and four 

 atoms, but I consider that the method used was most likely to lead to an error by 

 deficiency of absorption than by excess, and hence I adopt four as the quantity re- 

 absorbed. Then there is given the formula zncl -\- 9 ino -f- 4 ho. 



There are thus found to exist at least three different oxychlorides of zinc, 

 each of which may be obtained combined with various proportions of water. 



In order to be able to trace the connexion between these oxychlorides, and 

 to ascertain the relation in which they stand to the hydrated neutral chlorides of 

 the same family, they may be arranged in the following manner : 



A. 1. zncl-\-zno-\-2zno-\-2Ho 1 Hydrates of 

 2. zncl-\- zno-\-2zno-\- iiio I zncl -\-3zno. 



B. 1. zncl-{-6zno-\-4)Ho 



2. zncl-\-6zno-\-6Ho 



3. zncl-\-6zno-\-10uo 



C. 1. zncl-\-9zno-{-4Ho "1 Hydrates of 

 2. zncl-\-9zno->rl4HO J zncl-\-9zno. 



The oxychloride A and its hydrates conform to the type of the Brunswick 

 green and of the oxychloride of mercury. Elsewhere the nature of this type 

 will be discussed. 



The oxychloride B, in its dry form, is evidently the basic compound corres- 

 ponding to the chlorides, with six atoms of water of crystallization, and hence 



zncl -\- Qzno 

 corresponds to 



Hydrates of 

 zncl -\- Qzno. 



