242 
may also be of interest to quote the following letter from the 
Straits" Auriwlhu-al Bulletin (Vol. ii., 1903, p. 193), which, 
together with the accompanying chart, will give a fair idea as 
to their relative positions and to the trade in general at that 
" 36, Fenchurch Street, 
" London, E.C., 
" 7th April, 1903. 
" Harold Tunnicliffe, Esq., 
" Atherton Estate, Port Dickson, 
" Straits Settlements. 
"Dear Sir, 
" We duly received your favour of the 8th March with 
sample of rubber grown from Para seed. There are fair quantities 
of similar rubber beginning to come from Ceylon and they find a 
ready market. The sample which you send us seems to be of 
very good quality, tho' perhaps a trifle ' tacky ' which, however, 
may be due to the way in which the sample has been sent and 
may not be the case in bulk. In to-day's market, which is a good 
one, we should think a parcel of this rubber would fetch from 
As. :V/. to Is. ~h1. per lb., and our idea of the immediate future of 
the article, anyhow until next autumn, being a favourable one, we 
don't think that a shipment on the basis of our valuation will lead 
t<> disappointment. 
" (Signed) Hecht, Levis and Kahn." 
As showing the improvement on the beginning referred to in 
: ited that "the most remarkable development 
re during 1905 was the planting of rubber, 
1111,1 l Ah '' 1, r ' lif "' wei it th,- end of J. to.-) s,,m< !'),()()() acres as 
compared v> 7,500 in 1903, and the value of 
*»4 in L905 i a IN. 557,945 as compared with 
Rs.^221,000 in 1904." (Colonial Report, No. 494, Ceylon, 1906, 
It remains to be seen how soon, and to what extent, the West 
Africa, :m d other Colonies that have taken up the 
of this product, will meet the requirements of the 
J. H. H. 
XL.-PLANT DISEASES: VL-POTATO LEAF-CURL. 
nspuvium solani, Cooke. Syn., M. tomato, Cooke.) 
nrunoMu.'e'.'r Tn'wW 8 the P rosence of this disease are very 
"* lb ma'nin-sts i^ifT^ b \. terme <l a mild attack, which 
-: -.vi.'. rl. ..;,.,,.: ,t.;"!l? nly titer the haulm is nearlv t'.ill- 
aft.rwards ,.,irl un at tfc V"* 1 ? yellowish green colour and 
beconiea limp, and finallvdroSS ' ?* hanXm 800n afterwards 
is carefully followed it will h? V ^ C ° Ur8e ° f the disea9e 
are attacked first, the dfcW J^° b !f rved that the lowest leaves 
a" the leaves are involve' irn^l a8ceil <ling the haulm until 
involved. When the haulm collapses there is 
