232 PHYTOPHTHORA SP. ON HEVEA BRARILIENSIS 



area, when tapping ceases, as it does in some districts, on account of the 

 dry weather ; the bark renews quickly and well beneath this covering and 

 the bark rot is reduced. 



In those parts of Burma where the rainfall is not as heavy as in South 

 India the writer found that merely not tapping diseased trees during the 

 rains checked the progress of the disease, and therefore it seemed there was 

 no necessity to apply any mixture which would control the disease, except 

 perhaps in extremely wet districts, such as Mergui, where the application of 

 a thin mixture of tar and tallow smeared over the diseased area in the 

 manner described above should be effective. Covering the tapped surface 

 with a mixture of clay, cowdung and sulphur as is done in South India may 

 be tried. 



Pus A, 



May 8, 1916. 



