74 MANURES FOR FRUIT TREES 



The ashes of the stem and leaves contain in 100 

 parts : — 



One ton of the orange-tree extracts 28 lbs. of 

 mineral matter from the soil. 



The peel of the bitter orange {Citrus aurantium, 

 var., Bigardia) is used in making the tincture and 

 wine of orange and other preparations of The 

 British Pharmacopoeia. A volatile oil is also 

 obtained by mechanical means, from the sweet and 

 bitter orange-peel. 



The flowers of Citrus vulgaris, and also those of 

 the sweet and bitter orange, yield a volatile oil on 

 distillation — the oil of neroli. The flowers are also 

 used in the preparation of the orange-flower water 

 of commerce. 



The oil of petit-grain is obtained, by distillation, 

 from the leaves, young shoots and -WHripe fruits of 

 the sweet and bitter orange. 



