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dow, and a quart only, for the same'surface of 

 wheat, barley or oats. A greater quantity 

 upon cereals renders their growth too vigo- 

 rous, and increases the amount of straw at the 

 expense of the grain. 



Faecal matters are of no benefit to clover 

 or lucern, but upon hemp, tobacco, flaxseed 

 and pot-herbs, they are an advantageous ma- 

 nure. 



The disinfected urines are also available in 

 the manufacture of ammoniacal products. By 

 treating them with quick lime, and heating 

 the mixture, the ammonia is eliminated. 



There are other processes for the disinfec- 

 tion of faecal matters which have been proven 

 more or less successful. 



In 1835, Salmon suggested the application 

 of charcoal dust to the cleanings of the privy 

 wells as serviceable, particularly, in the disin- 

 fection of the solid portions. Before giving 

 the process, let us premise that previous to 

 this time Salmon had already manufactured a 

 disinfecting powder by the calcination, in 

 cast iron cylinders, of river and pond mud 

 or mire, which generally contain organic mat- 

 ters enough to form a highly absorbent disin- 

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