GAS LiqpoR. 136 



but by far the larger portion would be carried 

 off' by evaporation with the watery parts ; and 

 therefore it is that its conversion into a sul- 

 phate of ammonia, before it is thus applied, is 

 recommended. Or the field may be strewed 

 with gypsum, and the gas liquor may then be 

 sprinkled over it, when a natural decomposi- 

 tion will take place, — the carbonic acid gas of 

 the ammonia would unite with the lime, and 

 form carbonate of lime ; and the sulphuric acid 

 of the lime would unite with the ammonia and 

 form sulphate of ammonia. Either of these 

 plans is perfectly feasible, and we again re- 

 peat that a handsome return m?ij be antici- 

 pated from a judicious outlay in either of these 

 processes. 



There is another refuse at gas-works, that 

 may be used perhaps with advantage, — the 

 lime through which the gas is passed for the 

 purpose of purifying it; but, as it is exceed- 

 ingly caustic in its effects, great care must be 

 used. In the state in which it is sold at the 

 gas-works, it exists as a hydro-snlphuret of 

 lime; but on being exposed to the air, this pro- 

 perty is lost, and it would eventually be- 

 come a sulphate of lime (gypsum,) when 

 it would of course become beneficial. But 

 it is still a question, although there are some 

 facts adduced to the contrary, whether on 

 the whole it can be considered as beneficial 

 in its caustic state. 



Liquid Manure. — and by this we mean the 

 running of all stables, cow-sheds, and farm- 



