180 



COCOA 



CHAP. 



phosphate were given to the acre). Slaked lime and 

 sulphate of ammonia seemed to have less effect. 



In the case of Grenada the results of certain experi- 

 ments at the " Nianganfria " Estate are available. 

 Though these experiments would have been still more 

 interesting if control plots had also been present, some 

 of the results are well worth mentioning. 1 The plot A, 

 where pen manure was applied, was not so productive 

 as the plots where artificial manures were applied, and 

 is here omitted : 



YIELD PER ACRE IN KILOGRAMS 



1 Agricultural News, 1904, p. 347. 



