385 
That the maximum value should be ascertained and always used 
is dear from the expression given for the percentage of trees tap- 
ped daily where it is seen that the percentage increases as t in- 
creases, this put into practical form means that more trees would 
be always available for tapping and the returns from the estate 
would ” be correspondingly greater. I he most pressing need at 
present is that the limiting values for this quantity and foi the 
necessary period of rest T be determined experimentally, until that 
be done the probable returns to be expected from estates can only 
be o-uessed at, and there is and can be no guarantee that the crop 
is not being partially wasted though neglect of harvesting it com- 
plete!}’. 
There are numerous details such as the shape of the cross sec- 
tion of the cuts, the collection of scrap, the preliminary addition ol‘ 
preservative to the cups, the cutting tool to be used, which 1 have 
purposely left untouched fearing that their introduction would tend 
to obscure the two main issues of the selection of the type of cut 
to be adopted and the way in which the adoption can be carried 
out systematically. 
These details are for the field rather than the study and if con- 
sidered should be the subject of a special communication. 
P. J. BURGESS. 
R. C. 1770/04. 
Resident Councillor’s Office, 
Malacca , 22nd October , 1904. 
Sir —Y ou may like to notice in the next Agricultural Bulletin 
the enclosed list of prices received for a parcel of Para rubber pre- 
pared in the Government Gardens at Bukit Sebukor in Malacca 
under the supervision of Mr. F. B. GaGLIARDI, then an Officer of 
the Malacca Forest Department. 
2. The rubber was dried without the addition of any acid 
whatsoever. 
I have, &c., 
R. N. BLAND. 
Acting Resident Councillor . 
The Editor , 
Agricultural Bulletin, 
Singapore. 
