72 



1>ARA RUBBER. 



detachable steel blade which is designed to prevent cutting into 

 the tree while regulating the thickness of the bark to be pared 

 off, and this blade can be supplied in different widths as required, 

 or 'can be filed down on the cutting sides of the knife so as to 

 give wider cutting edges if required. These knives are usually 

 supplied with a very narrow cutting edge so as to pare or shave 

 off as thin a slice of the bark as possible, and therefore will not 

 cut if scrap is left on. New coolies unaccustomed to using these 



FIG. 7. The " Bowman- North way" Tapping Implements. 



knives force them to pare over scrap. To prevent this it is 

 best to use knives fitted with a narrow guard, or the guard filed 

 as recommended above to allow for working over scrap. Coolies 

 should be instructed to use both sides of the cutting edges of the 

 knife alternately, cutting from the lowest point up halfway or so, 

 and from the top downwards. They should also be instructed 

 to remove shield and cut without, carefully, when knots, &c., have 

 to be tapped over. 



No. 3 knife is a puncturing tool. Its object is to puncture 



