A CANKER DISEASE OF HEVEA. 
Herr kURT BUSSE, Deli, refers in the November number of the 
“ Tropenpfla.nzer,” to a canker disease of Hevea, It appears on 
two-year 9ld trees, and its progress may be stopped by cutting out 
the diseased part and disinfecting the wound with a mixture of tar 
and carbolic acid. Trees treated in this way are completely healed 
insid.e three months. Herr Dr. W. BUSSE, remarks that it still 
remains to be seen whether trees, which have satisfactorily healed 
after treatment for canker, show a latex production similar to 
normally healthy trees. He adds that on most estates activity in 
combating plant-disease is manifested only when the disease is 
already well advanced, and recommends that all plants should be 
sharply examined at regular intervals for signs of disease. 
W. J. G. 
We have received a small paper on Vulcanisation tests with 
Plantation Rubber by Messrs. Clayton BendLE and Stevens 
being a reprint from the “ Chemical News” of July 26, 1907, No. 
2487, Vol. 96, page 37. The authors show by experiment the com- 
parative value of Plantation Rubber, and hard cure para, to the 
advantage of the former. As the whole paper is of great interest 
we hope to reproduce it in full in our next issue. 
AGRICULTURAL SHOW 1908. 
We would remind our readers that the Agricultural Show for this 
year has .been fixed to take p lace sometime about August at Kuala 
Lumpur. It is important that all intending exhibitors should begin 
to prepare their exhibits in ^ood time. A liberal dressing of 
manure around coconuts, fruit Drees, etc., would be beneficial as 
would thinning the fruits at a latpr stage on those trees reserved 
for exhibition purposes. It woufd be a good thing if District 
Officers would issue preliminary notices in their districts calling the 
attention of the natives to the desirability of taking early action. 
W. F. 
NOTE. 
Mr. H. N. Ridley returned from leave on the 27th instant. 
W. F. 
