PARA RUBBER. 



93 



The illustrations on Plates 11 and 13, Series A, show the Pera 

 deniya trees referred to in the following records of yields : — 



Form Peradeniya Tbees — 29 Years Old : 



The figure on Plate 11 , Series A, shows the condition of one of 

 the trees at the end of the tapping operations ; the lines of adjacent 

 V's were beginning to interfere with one another, and the trees were 

 therefore being rested. The average yield in the first five weeks was 

 two pounds of rubber per tree, but subsequently the yield fell off 

 considerably. 



Rubber Yield from Long Spiral Lines 

 Four Pkradentva Trees — 29 Yeaks Old. 



Date. 

 16-6-05 

 17-6-05 

 19-6-05 



Carried forward 



Weight, 

 lb. oz. 



H 



6 

 7| 



16$ 



Date. 

 Brought forward 

 20-6-05 

 21-6-05 



Carried forward 



Weight. 



lb. oz. 



161 



13* 



6| 



2 41 



