RUBBER 115 



ment, tapping to 1^ ft. only was done. The 

 removal of bark was, with the Entebbe trees, four 

 times as rapid as at Kivuvu, but it will be seen 

 that only in one instance did the yield approach 

 the yield per unit of bark of the Kivuvu trees. 

 This was in the case of the eight-year-old tree, and 

 it is just where one would expect tapping to 6 ft. 

 could be profitably carried out. There is little 

 doubt that the tapping of such young trees to a 

 height of 6 ft. causes an extravagant expenditure 

 of bark for which no compensatory return in 

 Eubber is secured. 



For young trees five years old we favour only the 

 basal V-system of tapping. The V should extend 

 only across the section of the tree which has been 

 decided upon, i.e., one-third or one-quarter of the 

 circumference. The base of the V should be 18 

 ins. from the ground. The slopes of the sides will 

 form an angle of 45. As the tree increases in 

 girth, a second V can be added, 12 ins. above the 

 first, and the two joined together by a vertical 

 channel, so that the latex can be collected in one 

 cup. 



The manner of making the opening cut is rather 

 important, and this work ought to be entrusted 



