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The result of a further experiment conducted on somewhat diff- 
erent lines are shown in Table 22. In this case only one V incision 
was made, this being at 3' from the ground while on the opposite 
side of the same tree a similar incision was made at 6' from the 
base. On the following day the incision at 3' from the base was 
reopened while on the opposite side of the tree a new incision was 
made 6" below the first incision. Tapping operations were con- 
tinued daily in this manner until the-base of the tree was reached 
when the incision at 3' from the ground had been renewed on 12 
