373 



scallereci over a large area requiring immediate attention, a flying 

 inspection gang with a rapid remedy must be used. The best 

 remedy for this purpose is Carbon Bisulphide appHed as follows: — 



A small gang under an assistant or reliable head man capable of 

 recording the trees treated, must treat any area or tree that is report- 

 ed affected. If no special area or tree is reported, the Estate is to be 

 taken square by square ahead of the main inspecting gang, and the 

 Carbon Bisulphide (or Tuba, as set out below) applied to every tree 

 found to be affected by v^^hite ants, in the following manner :— 



Scrape the earth away from the collar of the tree, and pour 

 about a pint af Carbon Bisulphide on the tree right round the collar 

 and up as far as the ants have made their runs. Fill in the hole 

 quickly to keep in the fumes. Bore a hole at the collar and, with a 

 piece of wire or stalk of grass, find out how far up the tree the 

 hole runs. Where the hole ends, bore a small hole and pump or 

 pour into the tree half a cigarette tin of the Carbon Bisulphide and 

 plug hole. 



This application will drive the ants away for a sufficient time 

 to allow the main pumping gang to attend to it. Carbon Bisulphide 

 will in no way harm the rubber even if large quantities are used; 

 it has valuable manurial properties. 



All trees treated for white ants are to be tarred with an x on 

 two sides of tree about three feet up. Do not let tar run down trees. 



Where white ants are present, examine also for "Fomes" as 

 white ants usually attack after "Fomes." 



Malay Tuba, 



Another very good thing for driving away white ants is Tuba 

 root applied as follows : — 



Pound the root up in water, say a handful of the fresh root to 2 

 quarts of water. Pour this milky liquid round the collar and over 

 the part attacked; pump, or pour, some of the milky juice into the 

 tree as directed for Carbon Bisulphide, also bury the pounded 

 root round the tree close to the bark. The rain will wash out the 

 Tuba juice and kill the ants it touches and keep any others av/ay. 

 The Tuba can be bought in any village at 30 cents a bundle, which is 

 sufficient for 3 or 4 trees. Live roots of Tuba are easily procured, 

 and 1,000 or so should be planted in damp, good soil. 



BRANCH DISEASE. 



G. This can be detected by (he unhealthy appearance of the 

 leaves in the first stage, and by the dead branches in the second. 

 This appearance is similar to that produced by root disease, but 



