554 
The first period of tappings gave the following 
results : — 
Total . . . 
145 ozs. c/c 
Date. 
Fluid ozs. of latex 
obtained. 
Remarks 
excised. 
Dry rubber 
ozs. (avoirdupois). 
26—7—09 
11 
ozs. c/e 
Herring-bone 
5* ozs. 
27—7—09 
18 
)? 
* 
10 „ 
28—7—09 
14 
»1 *5 
tJ 
3f „ 
29—7—09 
18 
» 
8 „ 
30—7—09 
12 
»r it 
H. B. New 
3| „ 
31—7—09 
12 
ii 
4* » 
20-8—09 
36 
j? a 
H. B. New 
16* „ 
24—8—09 
24 
74 
7, M 
lbs. 3-11 ozs. 
It will be seen from this statement that daily 
tappings are not favourable ; there is a fall off in the 
quantity of latex obtained and a large fall in the ratio 
of dry rubber to that of latex. When first tapped, or, 
after a period of rest of six days or more, between 
tappings, two fluid ozs. of latex yield one ounce (by 
weight) of rubber substance. It may be also remarked 
that — although not shewn in this statement — vertical 
instead of oblique excisions give the best results. 
In preparing the rubber all the latex was strained, 
in the same way as Para, and to this latex boiling water 
was added in proportion of two parts to one. After 
well stirring about i oz. c/c of Purub , diluted in 4 ozs. of 
water, was dropped in the fluid and again stirred, when 
clotting or separation immediately commences and an 
agglutinated mass is formed which, after drying for 
about one day, is coagulated into a clear white, hard, 
odourless ball. 
