220 



Farmyard Manure. 



Soluble silica 25'35 



Insoluble silica 14'40 



Oxide of iron and alumina, with i>liospliates .. ]3'20 



Containing phosphoric acid (4"00) 



Equal to bone earth (8"66) 



Lime 25-01 



Magnesia 1"05 



Potash 2-73 



Soda 'ol 



Sulphin-ic acid 1'32 



Carbonic acid and loss 14*43 



100-00 



Taking into account the relative proportions in which the 

 soluble mineral matters are mixed Avith the insoluble in this 

 manure, the composition of the whole ash left, on burning of the 

 manure, has been calculated. 



Composition of ivlioh Ash, produced hy the same Manure. 



f Soluble silica 2-50 



Phosphate ot'limc 3-45 



Lime -58 



Magnesia -04 



Potash 7-05 



Soda 2-03 



Chloride of sodium -Gl 



Sulphuric acid 1-25 



^ d 



!3 o 



^ Carbonic acid and loss 4-59 



f Soluble silica 19-74 



Insoluble silica 11-21 



Phosphate of lime 



Oxide of iron and alumina, Avitli phosphates 11-84 



Containing phosphoric acid (3'11) 



Equal to bone earth (^'""l) 



Lime 19-48 



Magnesia -82 



Potash 2-12 



Soda -39 



Chloride of sodium 



Sulphuric acid 1-02 



i Carbonic acid and loss 11-28 



Arranged together. 



2224 



11-21 



3-45 



11-84 



(3-11) 



(6-74) 



20-06 



-86 



9-17 



2-42 



•61 



2-27 



15-87 



100-00 



100-00 



On comparing these results with the analyses of the fresh 

 manure of November, 1854, it will be found that the manure 

 kept under the shed for 3 months and .11 days has suffered very 

 little change both as regards organic and mineral constituents. 

 It will be perceived that the proportion of soluble compounds has 

 very little increased in the course of this time, and that the per- 

 centage of nitrogen in the manure, practically speaking, has 

 remained unaltered. Thus comparing the composition of the dr}- 

 manure of February with that of the fresh of November, it will 



