1917

TREATY BETWEEN GREAT BRITAIN AND SIAM 271 ‘
Commencing from tbe most seaward point of the northern bank of the estuary
of the Perlis River and thence north to the range of hills which is the watershed
between the Perlis River on the one side and the Pujoh River on the other; then
following the watershed formed by the said range of hills until it reaches the main
watershed or dividing line between those rivers which flow into' the Gulf of Siam on
the one side and into the Indian Ocean on the other; following this main watershed
so as to pass the sources of the Sungei Patani, Sungei Telubin, and Sungei Perak,
to a point which is the source of the Sungei Pergau; then leaving the main watershed
and going along the watershed separating the waters of the Sungei Pergau from
j the Sungei Telubin, to the hill called Bukit Jeli or the source of the main stream of
the Sungei Golok. Thence the frontier follows the thalweg of the main stream of
[ the Sungei Golok to the sea at a place called Ruala Tabar.
I his line will leave the valleys of the Sungei Patani, Sungei Telubin, and Sungei
Tanjung Mas and the valley on the left or west bank of the Golok to Siam and the
whole valley of the Perak River and the valley on the right or east bank of the
Golok to Great Britain.
Subjects of each of the parties may navigate the whole of the waters of the
Sungei Golok and its affluents.
The island known as Pulo Langkawi, together with all the islets south of mid¬
channel between Terutau and Langkawi and all the islands south of Langkawi shall'
become British. Terutau and the islets to the north mid-channel shall remain
to Siam.
With regard to the islands close to the west coast, those lying to the north of
the parallel of latitude where the most seaward point of the north bank of the
Perlis River touches the sea shall remain to Siam, and those lying to the south of
that parallel shall become British.
All islands adjacent to the eastern States of Kelantan and Tringganu, south of
a parallel of latitude drawn from the point where the Sungei Golok reaches the coast
at a place called Kuala Tabar shall be transferred to Great Britain, and all islands
to the north of that parallel shall remain to Siam.
A rough sketch of the boundary herein described is annexed hereto.
2. The above-described boundary shall be regarded as final, both by the Govern¬
ments of His Britannic Majesty and that of Siam, and they mutually undertake that,
so far as the boundary effects any alteration of the existing boundaries of any State
or province, no claim for compensation on the ground of any such alteration made
by any ttate or province so affected shall be entertained or supported by either.
3. It shall be the duty of the Boundary Commission, provided for in Article ITT
of the Treaty of this date, to determine and eventually mark out the frontier above
described.
If during the operations of delimitation it should appear desirable to depart
from the frontier as laid down herein, such rectification shall not under any
circumstance be made to the prejudice of the Siamese Government.
In witness whereof the respective Plenipotentiaries have signed the present
Protocol and affixed their seals.
Done at Bangkok, in duplicate, the 10th day of March, 1909.
[Seal] (Signed) Ralph Paget.
„ Devawongse Vaeoprakar.
Annex 2
Protocol concerning the Jurisdiction applicable in the Kingdom of Siam to British
Subjects and annexed to the Treaty dated March 10, 1909.
Sec. 1.—International Courts shall be established at such places as may seem
desirable in the interests of the good administration of justice; the selection of these
places shall form the subject of an understanding between the British Minister at
Bangkok and the Siamese Minister for Foreign Affairs.