152 
SELECTED ARTICLES. 
analogies between the compounds of salicyle and benzule led 
me to expect that a corresponding compound would be pro- 
duced from salicyle and ammonia. But the study of this re- 
action led to unexpected results. 
When a current of dry ammonia is passed upon dry chlo- 
ride of salicyle, it is absorbed, and the chloride becomes yel- 
low, and is in a short time changed into a yellow resinous 
mass — while water is condensed around the mouth of the 
tube through which the gas escapes. To render the reaction 
complete, the mass is to be powdered and submitted anew to 
ammonia. The yellow mass is then to be withdrawn and dis- 
solved in alcohol, or better in hot anhydrous ether, from which 
it is deposited in fine crystals with iridised reflection. This I 
call chlor os amide. If before crystallization the mass be washed 
in cold water, the solution does not contain hydrochlorate of 
ammonia, and does not affect nitrate of silver. The unpurified 
and the crystals afford on analysis the same results. From 
this it results that the ammonia does not take chlorine from 
the chloride of salicyle, but since water is formed, oxygen is 
taken away. At first I attributed this to an error of observa- 
tion arising from an incomplete drying of the materials — I 
then repeated the experiments with every precaution. The 
chloride was left in vacuo over sulphuric acid for twenty -four 
hours, and the ammonia was caused to pass through a long 
tube containing fragments of caustic potassa. The results 
were the same ; water and chlorosamide were produced. 
Chlorosamide is a yellow crystalline matter in small plates, 
insipid and nearly insoluble in water, which, however, be- 
comes yellow when left in contact with it. It is soluble in 
alcohol and ether. Anhydrous alcohol does not alter it, but 
when diluted and hot, ammonia is liberated. 
Chlorosamide also possesses the property of regenerating 
the matter from which it is formed, by appropriating the 
elements of water. To effect this it is only necessary to heat 
it* in an acid or alkaline solution. When operating in a closed 
tube, there is in the first case produced a salt of ammonia, and 
the chloride of salicyle sublimes j in the latter, ammonia is 
