THE CENTRAL AJMERICAN RUBBER TREE 225 



These two trees, therefore, yielded an average of 2 lb. 

 of rubber in eleven months. 



(4) A single tree (CastUloa gvxitemalensis), twenty- three 

 years old and 86 in. in girth, gave 4 lb. 13 oz. of rubber 

 at one tapping ; this is the largest yield recorded in 

 Jamaica from a single tree at one tapping. 



(5) The following table summarises the results of other 

 tapping experiments made on CastiUoa trees m Jamaica 

 by officers of the Agricultural Department : 



Belgian Congo. — The following results of tapping 

 experiments conducted on seven-year -old CastiUoa trees 

 growing in the Belgian Congo have been recorded : 



No. of trees tapped. 



Days tapped. 



Yield of dry 

 rubber. 



2^ 

 2^ 



2i 



4 



2 



2i 



Extending over a period of eight months. 



