dogs' dung. 133 



It is strongly recommended for wheat, bar- 

 ley, oats, turnips, clover, and hops. The quan- 

 tity to be used per acre from 1 to 2 cwt. The 

 price in November, 1841, is 26s. per cwt. in 

 London. 



Dogs^ Bung. — When the dog is fed on flesh 

 and bones only, the excrement yields upwards 

 of 95 per cent, of phosphate of lime, and it is a 

 question to be solved by experiment, whether 

 the use of this manure, limited as the supply 

 may be, would be beneficial. Reasoning from 

 the contents we should say. it would, but it 

 might be improved by a mixture of charcoal, 

 saturated with putrid urine, to furnish the am- 

 moniacal salts. 



Gas Liquor, — In the manufacture of gas, by 

 submitting coal to distillation in iron retorts, 

 besides the tar, a solution of carbonate of am- 

 monia is produced in a liquid form, and is pro- 

 perly called ammoniacal liquor. In many 

 cases this liquor is considered entirely as a re- 

 fuse; in others, in the vicinity of manufactures, 

 it is purchased by soap-boilers ; and in a few 

 cases it has been used as a manure ; and there 

 can be little doubt from the saline property that 

 it contains, that by judicious treatment it may 

 be rendered a very valuable fertilizer. 



Carbonate of ammonia, as before noticed, is 

 a valuable stimulant; but if the ammoniacal 

 liquor is applied to the soil in this slate, the am- 

 monia would readily fly off in the state of va- 

 pour, and no benefit would be derived by the 

 soil. To obviate this, it should first be con- 

 verted into a sulphate of ammonia; that is, am- 



