Great Britain and Netherlands signed treaty on Borneo in London, 20th of June, 1891. Her Majesty the Queen of the United Kingdom of Great Britain and Ireland, Empress of India, and Her Majesty the Queen-Dowager, Regent of the Netherlands in the name of Her Majesty Wilhelmina, Queen of the Netherlands, being desirous of defining the boundaries between the Netherlands possessions in the Island of Borneo and the States in that island which are under British protection, have resolved to conclude a Convention to that effect, and have appointed as their Plenipotentiaries for that purpose, that is to say: Her Majesty the Queen of the United Kingdom of Great Britain and Ireland, Empress of India, the Right Honourable Robert Arthur Talbot Gascoyne Cecil, Marquis of Salisbury, Earl of Salisbury, Viscount Cranborne, Baron Cecil, Peer of the United Kingdom, Knight of the Most Noble Order of the Garter, Member of Her Majesty’s Honourable Privy Council, Her Majesty’s Principal Secretary of State for Foreign Affairs, and Her Majesty the Queen-Dowager, Regent of the Netherlands, Count Charles Malcolm Ernest, Georges of Bylandt, Knight Grand Cross of the Order of the Nether land Lion, Her Majesty’s Envoy Extraordinary and Minister Plenipotentiary at the Court of St James, who havw produced their Full powers, found it good and in due form, have agreed upon the following articles: ARTICLE I The boundary between the Netherlands possessions in Borneo and those of the British protected States in the same island shall start from 4 degrees 10’ north latitude on the coast of Borneo. ARTICLE II The boundary line shall be continued westward from 4 degrees 10’ latitude and follow in a west-north-west diection, between the Rivers Simengaris and Sodeang, up to the point where the meridian 117 degrees east longitude crosses the parallel 4 degrees 20’ north latitude, with the view of including the Semengaris River within Dutch territory.
The boundary line shall follow westward the parallel 4 degree 20’ north latitude until it reaches the summit of the range of mountains which forms on that parallel the watershed between the rivers running to the north-west coast and those running to the east coast of Borneo, it being understood that in the event of the Semengaris River or any other river flowing into the sea below 4 degrees 10’, being found on survey to cross the proposed boundary line within a radius of 5 geograhical miles, the line shall be diverted so as to include such small portions or bends of rivers within Dutch territory; a similar concession being made by the Netherland Government with regard to any river debouching above 4 degree 10’ on the territory of the British North Borneo company, but turning southwards.
