18 
first period of six months with two cuts on h tree, alternate days, 
and then on one cut on § tree daily. The yields of No. 1 latex and 
scrap rubber were recorded and the figures given below are the 
weights of wet crepe, weighed 15 hours after machining. 
Plot No. 1, 10 acres; 1,015 trees, 1 ton basic slag per acre and 
forked 22nd to 30th July, 1915, cost $48,68 per acre. Crop for first 
six mouths, 860 lbs., second six months 9S5 lbs. (showing an increase 
of 125 lbs.) ; third period of six months 1,264 lbs., daily tapping 
as previous period, increase of 404 lbs. over first period. 
Plot No. 2, 10 acres, 1,017 trees, one ton lime, 10 tons crushed 
limestone per acre, and forked, August, 1915, costing $131.50 per 
acre : crop, first six months, 1,068 lbs. ; second six months, 1,134 lbs. ; 
third six months, 1,416 lbs. ; increase over first period, 348 lbs. 
No 3 plot, 10 acres, control plot, forked 1915, 1,460 trees : crop, 
first six months, 1,439 lbs. ; second six months, 1,640 lbs. ; third six 
months, 2,056 lbs. ; 
increase over 
first period 
, 617 lbs. 
Girth measurements of all 
the trees 
at three 
feet from the 
ground were taken 
in February, 
, May and 
November, 1916. The 
average girth of the trees in each plot on the different dates was as 
follow's : 
February, 
May, 
November, 
Total increase, 
1916. ' 
1916. 
1916. 
nine months. 
inohes. 
Inches. 
Inches. 
Inches. 
Plot No. 1 
... 26.50 ... 
27.14 
.. 27.73 
... 1.23 
„ No. 2 
... 26.63 ... 
27.20 . 
.. 28.32 
... 1.69 
„ No. 3 
... 27.20 ... 
27.89 .. 
. 29.23 
... 2.03 
Mr. L. Mooijart said that as to manuring he once sent a sample 
of soil to Ceylon and was advised to put down a large amount of a 
certain mixture, and up to date he had not got much more from that 
plot than from any other. (Laughter). 
Mr. G. H. Bennett; May I ask how much per acre was used P 
( Laugh ter). 
Mr. Mooijart: I am sorry I have not come prepared to tell 
you that. 
The Chairman reminded the meeting that the time was short 
and that they 'might go on discussing just for the time available. 
Mr. Prior said that he understood Mr. Spring to deprecate the 
idea of contour draining as against terracing. He wished to know 
what system of contour draining he had in mind. Was it the old 
Ceylon system ? 
Mr. Spring : I meant hill land. \ do not know' the Ceylon system 
but the one 1 referred to is 1 in 25. 
Mr. Prior : The old system in Ceylon draining was on the scale 
of 1 in 20, which carried a lot of water to the valley down below'. 
