RUBBER 651 



such a tapping system as compared with the old method 

 of tapping out one side completely are urgently required. 

 They should deal with quarters, not halves. 



It is a matter for regret that so many tapping experi- 

 ments are published with insufficient data. It is essential 

 to know the number of trees, average girth, method or 

 pattern of tapping, fraction of circumference operated 

 upon, number of cuts, angle of cut, tapping interval, 

 number of tappings, as well as the total yield. If experi- 

 menters would supply accurate diagrams these would 

 furnish much of the information required. 



