68 



MANURES FOR FRUIT TREES 



An oil (oleum juglandis) is expressed from the 

 ripe kernels of Juglans regia, and the yield is 63 

 to 65 per cent. Similar oils are contained in the 

 fruits of Juglans cinerea (the butternut) and 

 Juglans nigra. The root-bark of Juglans cinerea 

 is a cathartic and tonic, and is official in the United 

 States Pharmacopoeia. Juglans laciniata aflfords an 

 excellent contrast of scenery by means of its light 

 green foliage. 



Lemon (Citrus Limonum, Natural Order, 

 Rutacese) is a greenhouse evergreen shrub. It 

 grows in a good turfy loam with a little charcoal 

 and sand. 



The ashes of the wood, leaves, rind and juice 

 contain in 100 parts : — 



One ton of Citrus extracts 16 lbs. of mineral 

 matter from the soil. 



