( 39 ) 

 without any previous preparation. The dung 

 is swept from the pens daily, and heaped into 

 piles whence it is sold, by measure, at from 

 ten to twenty cents per bushel. Generally? 

 it is applied to the fields by folding the sheep 

 in the enclosures. According to Boussin- 

 gault, one sheep can, during the night, ma- 

 nure a surface of about three and a half square 

 feet. 



Bat Dung. The bottom of caves fre- 

 quented by these birds are often covered with 

 their excrements. Their application to the 

 soil produces good results. 



Colombine. The excrements of pigeons 

 are known by the name of Colombine. They 

 are favourable to all crops, but being very 

 energetic must be used prudently. In the de- 

 partment of the Straits of Dover, where there 

 are vast numbers of pigeons, twenty dollars 

 are paid per annum, for the excrements of six 

 or seven hundred, which is a large wagon 

 load. This quantity suffices to manure two 

 and a half acres of surface. 



Chicken dung is also very active, but has a 

 less value than colombine, though much es- 

 teemed in southern localities. 



Guano, Guano is the accumulated excre- 



