3*9 
occasions while on the opposite side of the tree there were 12 
incisions each opened on only one occasion. 
The difference in yield between the new incisions and the re- 
newed incisions is not so great as the former experiment but it 
seems apparent that if the maximum flow of latex is to be ob- 
tained, that either the original wound must be re-opened from 
time to time or the incisions made closer that 6 inches apart. 
Although a much larger number of trees were employed in the 
experiments conducted in the Singapore Botanical Gardens the 
