306 BOARD OF AGRICULTURE. [Pub. Doc. 



much heat. It is known as a hot manure. There are 9.9 

 pounds of dry excrement, with .26 pound of nitrogen, pro- 

 duced daily by each animal. From 4 to 6 pounds of straw 

 are used daily. 



8heep manure is, weight for weight, the most valuable of 

 all. It contains more nitrogen and phosphoric acid, but less 

 potash, than horse manure. It does not decompose so read- 

 ily, and is next to horse manure as a heater. There is .97 

 pound of dry matter, having .04 pound of nitrogen, pro- 

 duced daily per animal. Three-fifths of a pound of litter is 

 used daily. 



Pig 7nanure is generally rich, does not develop much 

 heat, and is called cold. It should always be mixed with 

 other manure. There are 1.5 pounds of dry matter, with 

 .05 pound of nitrogen, produced daily per animal. From 4 

 to 8 pounds of straw daily per animal are recommended. 



Cow manure is very much less constant in composition 

 than that of the horse. It decomposes slowly, with the 

 evolution of little heat. It is the poorest in plant food of 

 any farm manure. There are 9.92 pounds of dry matter, 

 having .26 pound of nitrogen, produced daily per animal. 

 From 6 to 10 pounds of straw daily per animal are used. 



Poultry manure resembles guano in composition, but is 

 less valuable. Its nitrogen is in a very assimilable form. 

 It ferments rapidly. 



Night soil is of high value, if immediately and regularly 

 composted, otherwise it loses its good qualities. 



The shaded lines on the plate opposite show the relative 

 amounts of the elements of plant food in several of these 

 products. 



II. — How Barnyard Manure compares with Other 

 Manures. 



In judging the value of any manure or " fertilizer," * six 

 points must be borne in mind, namely : the percentages of 

 nitrogen, potash, phosphoric acid and lime; fifth, the avail- 

 abilities of each ; and, sixth, the mechanical effect which the 

 manure has on the soil. With reference to these, let us 



* In this paper, " manure " and " fertilizer " mean the same thing. 



