THE JOYOUS ART OF GARDENING 



in the days when "father used to farm," had precisely fifty per 

 cent pf its value thrown out also. Pig manure, except for the 

 compost-heap, should be avoided. Cow manure is the most 

 valuable, horse next. All manure should be kept under cover. 

 The liquid manure, which is pecuUarly rich in nitrogen, should 

 not be allowed to be lost — as it usually is. The bedding of 

 cattle with sawdust renders the manure useless. These are 

 merely a few points, but if the gardener has but a single horse 

 or cow it would profit him to read Professor I. P. Roberts's 

 "The Fertihty of the Land," whence he may learn how prop- 

 erly to care for and conserve this particular blessing of Prov- 

 idence. 



194 



