126 MANURES FOR FRUIT TREES 



One ton of the laburnum extracts 26 lbs. of 

 mineral matter from the soil. 



Laburnums grow rapidly in very rich and moist 

 soils. 



Cytisine (CxiHi4N20) is a poisonous alkaloid, pre- 

 sent in the laburnum and other leguminous plants. 



Larch (Larix europcea, Natural Order, Coni- 

 ferse) is a hardy deciduous tree, with ornamental 

 foliage. It prefers sandy soils, is largely grown in 

 Britain, and extensive forests of larch trees occur in 

 Austria. 



The ashes of the larch contain in 100 parts : 



One ton of larch extracts 31 lbs. of mineral 

 matter from the soil. 



Larch bark is used in medicine ; the outer 

 surface is of a characteristic rosy colour, and an 

 oleo-resin, known as Venice turpentine, is obtained 

 from the stem of the living tree. The stem is 



