ARTIFICIAL MANURE. 225 



monia ; solutions of carbonate and bi-carbonate of ammo- 

 nia, equivalent each to 82 lbs. of crystals of sulphate, were 

 absorbed to dryness by peat powder. These several 

 manures were sowed with oats and covered in, under similar 

 circumstances, of soil, time, and exposure. The yield was as 

 follows — poudrette representing 100 : 



The next year wheat was sown, and the equivalent of 

 sulphate of ammonia increased to 103 lbs. A mixture of 

 No. 1 and 2 in equal portions gave results equal to pou- 

 drette. 



From these results, it is believed that a manure may be 

 prepared with the ammoniacal liquor of gas works and peat, 

 in a portable form, which may be confidently recommended 

 to the former and gardener. 



Gas liquor, alone, applied by the water-cart, at the rate of 

 400 gallons per acre, and the land a few days after sowed 

 with barley, has given results equal to stable manure. 

 Much of this liquor is allowed to run to waste. With the 

 hope that it may be saved for the mutual benefit of agricul- 

 ture and the gas manufacturer, the following suggestions are 

 submitted to their consideration. 



From experiments which were tried by Jacquemart, with 

 those above detailed, it appeared that sulphate of ammonia 

 and peat powder produced very little effect. The conversion 

 into that salt is to be avoided if it is intended to be used as 

 will be here recommended. Sulphate of ammonia, mixed 

 with other manures, is known by repeated experiments to 

 10* 



