(4) That a carpenter's gouge or a modification of this tool is 
best adapted for tapping, as it does less damage to the 
trees than the dhao or kukri , and enables the rubber to be 
collected with a smaller intermixture of foreign matter and 
dirt (see paragraphs 5, 6, and 7). 
(5) That only horizontal cuts should be made during the tap- 
ping process, as neither oblique nor vertical cuts yield the 
same quantity of rubber (see paragraph 10). 
(6) That the expensive application of tar to the wounded trees 
is not justified by any commensurate result, and may be 
discontinued (see paragraph 14). 
(7) That, so far as experiments have been made, there are 
grounds for believing that the trees cannot be tapped three 
years in succession without showing signs of exhaustion, 
and that if this is proved to be correct, it is also probably 
only less wrong to tap the trees two years in succession 
(see paragraph 16 and statement C). 
(8) That neat and capeful packinghas an important effect on 
the selling price obtained for the rubber in the London 
market (see paragraph 14). 
