42 
I would however, call attention here to an important 
discrepancy between the figures stated to represen the 
on tout of Asiatic rubber and the actual exports it nas 
been ascertained that not less than 10,000 tons of Jelutong 
(. Dyera costulata) are used annually, and is exported via 
qirfo-nnore and ports to America and German} . Jelutong, 
fs aAow grade Rubber, but it is of as much importance as 
the Mexican Guayule; — indeed, there is strong mqui } 
it— and I can only suppose the omission occurs because 
none of the rubber is used in Great Britain, 
Tf therefore Jelutong is added to the estimated output 
of wM rubber the grand total would be 75,000 tons instead 
of 65,000 tons. , , . „ ._, nnn 
It should be remarked that tins output of 65// 
tons is not only the world’s demand but also the woild s 
supply of wild rubber, and at the time of writing the former 
exceeds the latter — especially for fine, grades of i ubbe 
but a change is at band; already-curing the last fiscal 
vear— 1000 tons of cultivated rubber have been marketed ; 
rubber cultivation is being attempted m the tropics all over 
world- the annual output of rubber from plantations 1 
bind com ng iX-bearing, is certain to increase enor- 
v-r, Av-lnd a brief review of the economic situation with 
Se lli’of obserXtLns made at the exhibition may be op- 
portune. 
Commercial Rubber. 
blc bX al interesting exhibition of Para rubber only, 
poS^i J of ail — rdal 
rubbers ire examined, but in this review I will leave Paia 
rubber for the last. 
Euphorbiaceae. 
Mcmihot Glaziovii (Ceara rubber) was only sparing- 
ly exhibited but the few perfect biscuits and small samples, 
n the Ceykm and West Indies’ sections received much 
attention ' This species was obtained from tbe Piovmce of 
Ceara bv' Cross aid distributed to the West-Indies India, 
Cel on Africa and the Straits, about the year of 1877. 
UnVibiuHe recently all reports in respect of yield were 
