( 70 ) 



in Nitrogen. There are also the torteaux of 

 cotton, hemp, camaline seeds, beech nuts and 

 poppy s. The walnut cake is reserved ex- 

 clusively for the nutrition of animals. To 

 render these residua suitable for the soil they 

 must be powdered, and spread upon the bud- 

 ding plants, or turned under the soil by 

 ploughing. As moisture is indispensable to 

 the successful influence of the powdered cake, 

 it should be wetted previous to its application. 

 In England, the proportion is 900 lbs. per 

 acre; the quantity, however, varies with the 

 crops. They are peculiarly adapted to light 

 and sandy soils. 



We conclude our remarks upon Nitrogenous 

 manures with a table of their comparative va- 

 lues. This table is compiled from the labours 

 of the distinguished Savans, Payen and Bous- 

 singault. 



The fifth column of the table is the most 

 useful, as it shows the amount of Nitrogen 

 contained in the dry manure; for it is only in 

 their dry state, that we can make a comparison 

 of manures. 



