210 DR T. ANDERSON ON SOME OF THE 



Chloropianyl as obtained by either of these processes is in the form of transpa- 

 rent colourless needles, scarcely soluble in cold water, rather more so in boiling. 

 Alcohol and ether dissolve it much more abundantly, and deposit it in fine crystals. 

 It is not more soluble in the alkalies than in water, and they do not remove chlorine 

 from it. Nitric acid dissolves it with a red colour, and on heating it is decom- 

 posed. It is soluble in cold oil of vitriol, and on heating, a fine greenish-blue 

 solution is obtained, from which water throws down brown flocks, soluble in the 

 alkalies with a red colour. Chloropianyl melts at 347°, and sublimes unchanged 

 at a higher temperature. The properties of specimens prepared from opianyl and 

 from meconine extracted directly from opium, were compared, and found to be 

 perfectly identical. Of the following analyses, the first two were made with 

 chloropianyl obtained from meconine in the dry way, and the third was from 

 opianyl, and prepared in the wet way. 



{5-095 grains of chloropianyl, dried at 212°, gave 

 9*790 ... carbonic acid, and 

 1-985 ... water. 



{3-352 grains of chloropianyl gave 

 6-435 ... carbonic acid, and 

 1-280 ... water. 



{4-285 grains of chloropianyl gave 

 8-265 ... carbonic acid, and 

 1-620 ... water. 



f 4-950 grains of chloropianyl gave 

 13-039 ... chloride of silver. 







Experiment. 







Cal 



dilation. 







i. 



II. 



in. 









—v 



Carbon, . 



52-40 



52-35 



52-60 



52-51 





^20 



120 



Hydrogen, 



4-32 



4-21 



4-20 



3-93 





H„ 



9 



Chlorine, 



1517 







15-53 





CI 



35-5 



Oxygen, . 



28-11 







28-03 





o 8 



64 



100-00 10-000 228-5 



This corresponds with the formula C 20 H 9 CI 8 . 



The action of chlorine upon meconine has been examined by Couerbe, but 

 his results differ entirely from those just described, and his statements are very 

 loose, unsatisfactory, and in some points absolutely conflicting. He passed chlo- 

 rine into fused meconine, and obtained a product containing 25-75 per cent, of 

 chlorine, and consisting of crystals mixed with a resinous matter. The greater 

 part of the chlorine exists in the latter, the former containing only 5-43 per cent., 

 which is removed by oxide of silver, or by potash. The product is said to crys- 

 tallize from alcohol in short prisms, to contain no chlorine, but to have a power- 

 fully acid reaction, and to precipitate the salts of lead and copper. Couerbe de- 

 signates it mechloic acid, and assigns to it the formula C 14 H 7 O 10 , which ob- 

 viously bears no relation to that of the original substance, and is in itself impro- 



