Contents 



CHAP, 



VII, Magnesia and Silica . . . 

 Magnesia . . . • . 



VIII, Organic Manures .... 

 Need to ascertain their relative value 

 Green Manure .... 

 Farmyard Manure , . . • 



Litter 



Variation in Value and its Causes . 



Keeping and Management of the Dung Heap 



Carting, Spreading, and Top Dressing 



Means of Preventing Loss 



Mixed Manures . . 



Urine . 



Guano 



Fish Guano 



Bat Guano 



Blood . 



Dried Blood 



Pigeon and Poultry Dung 



Town Refuse 



Sewage . . 



Seaweed . . 



Leather Waste . . 



Refuse of Skins . . 



Nitrogen . . • 



IX. Improvements 



Improvements in General 

 Calcareous Improvements 

 Lime .... 

 Ground Lime t t 

 Gas Lime . . 

 Slag from Sugar Manufacture 

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