160 
wood) — and almost horizontal branches, from which han 
s of leaves, long, oval in shape, and smooth edged (ud 
toia. 
“The milk of the rubber tree, or its mercantile product, is 
contained principally in the fibres between the woody portion of 
the tree and the bark. This fibrous part is a vital portion of the 
tree. For this reason, in making incisions in the bark to obtain 
the milk, it is necessary to proceed Me great caution and 
according to the method described Eora 
“The milk contains more or less water, "isecrdigt to the time 
of its extraction; on an average it can be caleulated to hold 
about 60 per cent. water and other substances, and 40 percent.  - 
saleable product ; of this, erue 33 per cent. is rubber of — 
superior quality. 
he climate most appropriate for eg is the hot or coastal, 
with a temperature of from 25? to 35? Celsius (93? to 103? F.) and 
the altitude above sea level up to 1,500 feet. The ground should be 
moist, deep, and loose; neither clay nor stone. Rubber should 
not be planted in iss sun, We found our opinion upon the 
following reasons : 
«(1.) The nazure of the rubber tree 
* (2.) The trials made in Guatemala. since 1872. E 
“(3.) The consideration that, planting in the shade, there is 
absolute certainty of a satisfactory result. : 
“If the wild tree pori Be the shade of trees of greater E 
growth in the natural forests, it is because, by the help of these, - 
its sap remains in the state Pape by nature as a condition of its 
proper growth and production. It is 3 
OT RN 
t il ze 
should also not be lost sight of that on the Pacific Coast we 
oa a dry season for six consecutive months, very prejudice 
antations in the sun. Allow the rubber tree a e. 
u 
and et yield. It is a mistake to wish to cultivate plants, 1 
h 
tions, soil, per atmospheres, with the desire of obtaining goo 
yields in ‘poth. The result is that neither one nor the Oo 
finds the requirements necessary for proper development. 1 
would appear much more feasible to conduct the cultivation © 
vanilla simultaneously with that of rubber, utilizing the trees for 
shade. 
- Advocating the planting in the shade is equivalent, in ; 
country like Guatemala, still possessing so much virgin forest, to 
planting in the woods. There are thousands of acres of land 
tion, the latter a condition of the greatest importance. The 
and un N. eut down. could be be nas. over the qom 
