78 THE AGRICULTURAL CHEMISTRY OP CACAO, 



and that a plantation of trees of this age growing on one acre 

 will contain 



Nitrogen ... ... ... 201 5>s. 



Phosphoric anhydride ... 95 



Potash ... ... ... 251 



Lime ... ... ... 400 



Magnesia ... ... ... Ill 



whilst the so-called suckers and other young shoots trimmed 

 annually from the trees contain* 



Nitrogen ... ... ... 84 H>s. 



Phosphoric anhydride ... 49 



Potash ... ... ... 42 



Lime ... ... ... 66 



Magnesia ... ... ... 20 



These together with the leaves which he states contain 



Nitrogen ... ... ... 39 ft>s. 



Phosphoric anhydride ... 75 



Potash ... ... ... 30 ,. 



Lime ... ... ... 32 



Magnesia ... ... ... 10 



are practically in all cases yearly returned to the soil. 



The fruit, of which the husks may or may not be returned 



to the soil according as to whether the pods are or are not 

 broken on the field, are estimated to remo\ ? e as follows : 



If whole fruit removed If the pods are broken 



from the field. and left in the field. 



Nitrogen ... 155 8 p 7 Ibs. 



Phosphoric anhydride 7 '9 4 '5 



Potash ... 22-1 3-7 



Lime ... 65 14 



Magnesia ... 2-3 1 



* This estimate appears to be excessive. 



