MANURE. 147 



Brought up, 67*7 



Undetermined organic substances, of ""l 



which about 12 per cent, is soluble I ^9.0 

 in water, a trace of salts of iron [ 



and water, J 



100* 



Guano is an article of commerce. It is much 

 used in Peru, where a spoonful is applied to each 

 hill, as soon as the corn shows itself. The effects 

 are what the most sanguine could expect, from this 

 natural, concentrated poudrette, consisting both of 

 salts and geine. Allowing, as has been asserted, 

 that the land itself in Peru, contains not a particle 

 of organic matter, guano can be no proof that plants 

 require not geine, containing as it does, by analysis, 

 12 per cent, of soluble organic matter. 



213. The dung of all domestic fowls, and of 

 birds in general, contains salts similar to those in 

 guano ; and while this subject is under consideration, 

 the fact may be mentioned, that it has been experi- 

 mentally proved, that the dung of pigeons is 2-7ths 

 stronger than horse manure. And for stoved mul- 

 berries, vines, peaches, and other plants, the drop- 

 pings of the barn yard fowls, I part to from 4 to 1 

 of water has been found to produce excellent re- 

 sults ; the trees having, at the end of two years, the 

 most healthy and luxuriant appearance imaginable. 



