260 
enclose a paper containing the results of my inquiries for insertion, if 
you think it of sufficient importance, in the Kew Bulletin. 
1 have also sent a box containing a number of specimens illustrating 
this paper, together with a few others which you may like to have for 
your museum, and I now enclose a list of the contents of this box. 
If you would "warma eamm the botanical specimens I ens and add 
a few remarks on them ould make ihe paper much more valuable. 
I have very likely emet алей specimens of the three plants from 
which ¿poh aker is obtained, and you may be able to find them in the 
Kew Herbarium, as Dr. King sends duplicates of my plants 
If you could.also get someone to try a few experiments with the 
poisons I send, both as to their effects on animals and the nature of 
their poisonous principles, the whole question would be finally settled. 
uu the poisons are all mixed with spirits there is no fear of their 
by the aborigines. They will simply require evaporation on a water 
th to be in a fit state, with the addition of a known quantity of water 
e injection. Ifa ves Ц result is required about one grain of the dried 
poisons should be used. 
I will write ips about the live plants I am sending you, and am 
ours truly 
(Signed) Г. Уват, Junior. 
У. Т. Thiselton Dyer, Esq., C.M.G., F.R.S., 
Director of the Royal Gardens, Kew. 
—Т am much obliged to you for the determinations of the Musci 
and Hepaticæ which I received by last mai 
IPOH AND OTHER ARROW-POISONS USED BY THE ABORIGINES OF 
PERAK, IN THE MALAY PENINSULA. 
There are two tribes of рема in Perak who use arrow-poison, 
viz., the Semangs and the Sakais. The former people, who live in the 
north of Perak, use both реа and bows and arrows; while $ 
latter, who live in the southern part. of the State, use blowpipes only. 
I recently visited Ulu Selama, where some of the Semangs live, and 
was taken by them to a place called Kuala Jah, at, I should estimate, 
500 feet elevation, where I was shown, growing in the virgin forest, 
witbin 100 yards of one another, two large Ipoh trees. The rger 
was about 5 feet in diameter at 5 feet from the erem ce had a trunk 
full 100 feet in height to the first. branch. It had 
times, the bark being deeply scored up to a height of 25 (feet from the 
ground; the smaller tree was also scored all over. ‘The bark externally 
is ies = internally oran ge-brow = and is very cert — fibrous. 
k of the tree with clay, into bam cut slanting 
тзн À right and left, like what is known as herring-bone stitching, 
the lower ends of the scores pointing inwards, At the bottom 
d each iiid of scores is puta leaf, fastened to the bark with clay, 
to lead the sap which trickles down into a bamboo. We only succeeded 
in getting about 3 ozs. of sap the first day; but two days , by 
erecting a scaffoldin around the tree and extending the scores up 
anus about ime ` “Three ounces of sap, pod 
vp y 
