( 35 ) 



the high price of straw compels an economical 

 use of that material, the litter may be washed, 

 and the wash water caught with the urine in 

 the draining-well. The liquid manure thu5 

 obtained is used alone, and is conveyed to 

 the fields in hogsheads. 



The urine of cattle is also occasionally used 

 separately. In Switzerland they add sulphate 

 of lim€(plaster,) or sulphate of iron (copperas,) 

 to transform the volatile carbonate of ammo- 

 nia into sulphate of ammonia, which is a fixed 

 salt. 



It has been frequently questioned whether 

 there is advantage or injury in the appli- 

 cation of dung before or after its fermenta- 

 tion^ but experience having proved that the 

 dung, fresh from the stalls, undergoes the 

 same alteration and generates the same pro- 

 ducts under ground as when left to ferment 

 En the air, the question then is, whether it is 

 beneficial to permit its fermentation in the 

 same soil which it is to manure ? Gazzeri, 

 has shown, by numerous experiments, that 

 the practice of leaving dung to ferment be- 

 fore applying it to the fields, occasions a 

 loss of valuable principles, and hence it is 

 more advantageous to use it fresh from the 



