316 
*25 p.c. 
20 p.c. 
17 p.c. 
10 p.c. 
The paper is illustrated with figures of nodules, and of 
a. tree covered with burrs. The whole article is well worth 
studying by rubber-planters. 
Manuring of Rubber. 
An article on manuring of rubber by Mr. Cowie ap- 
the India-Rubber Journal, Ap. 19, UWJ. !'■ db.., 
t based on work done by Mr. Eckert of Ceylon, and on 
experiments of Deli-Muda Sumatra. A manure coutainm„ 
(i per tot of nitrogen and 5 per cent potash was found to 
develop the foliage to such an extent that the tiees weit 
roto down bv the wind, but a mixture with 1 per cent 
nitrogen and 15 per cent potash improved mimensi.lv the 
trunks of the trees. , , 
The following manures are recommended. 
I. For laud rich in nitrogen, with good leai-gro^th. 
28 p.c. Muriate of potash 
Superphosphate 
Bone-meal 
Oil-cake 
_ Sulphate of Ammonia 
400 to 800 lbs. per acre. 
II. For land poor in nitrogen. 
20 p.c. Muriate potash 
30 p.c. Superphosphate 
10 p.c. Bone-meal 
14 p.c. Sulphate Ammonia 
16 p.c. Oil-cake 
400 to 700 lbs. per acre. , , 
These manures can be sprinkled at a toot or a foot and 
a half distant from the stem for each year of the plants 
growth. (Bv the way why do planters so constantly plant 
their manures right up to the trunk of their trees . The 
growing tips of the important roots are not there, thej hc 
at a distance from the tree m a regular ratio to the height 
of the tree. One does not feed a horse by putting its com 
on its back, and waiting till it falls off and the horse can 
pick it up off the ground, Ed.) To prevent the manure 
being washed away by ram it is advisable to lightly pick it 
in or to dig a trench round the tree and cover it m with 
surface soil. 
Animals Associated with Rubber. 
This is the title of a Ceylon circular by Mr. E. Green, 
who describes a number of insects attacking the rubber tree 
K 
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