NITEOGENOUS MANUEES. 



241 



volatile ammoniacal compounds. Finally it arrives in the de- 

 composition vessel B, into which milk of lime contained in the 

 vessel H is run from time to time by means of the iximp G and the 

 pipe n. The ammoniacal compounds which have resisted the action 

 of steam are decomposed in B, where the liquid is kept in motion 

 by a jet of steam injected through the pipe j;. The ammoniacal 

 liquor treated by the milk of lime, the non- volatile elements of 

 which are thus entirely decomposed, flows out in a continuous 



Fig. 46. — Feldmarm's Ammonia Still. 



mx^:^N^^^\^^^>- 



manner through the pipe e into a small column C, where the free 

 ammonia is volatilized. The water, completely exhausted, collects 

 in D fitted with a water level q, and flows in a continuous fashion 

 into /. The steam enters all the parts of the apparatus by the 

 pipe g, fitted with a valve g'; it passes through the column C, the 

 pipe h and the column A, the pipe i, and finally charged with 

 ammonia it enters the saturation vessel F, filled with sulphuric acid 

 and cooled bv the water of the reservoir E. The gases not absorbed 



16 



