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The present Additional Article shall have the same force and effect as if

it were inserted word for word in the Treaty signed this day, and shall be ratified, and the Ratifications exchanged at the same time.

In Witness whereof the respective Plenipotentiaries have signed it, and have thereunto affixed the Seals of their Arms.

Done at Vienna this 22d of January, 1815.

(L.S.) CASTLEREAGH. (L.S.) CONDE DE PALMELLA.

(L.S.) ANTONIO DE SALDANHA DA GAMA, (L.S.) B. JOAQUIM LOBO DA SILVEIRA.

ADDITIONAL CONVENTION to the Treaty of the 22d January, 1815, between His Britannic Majesty and His Most Faithful Majesty, for the purpose of preventing Their Subjects from engaging in any Illicit Traffick in Slaves, Signed at London the 28th July, 1817, in the English and Portuguese Languages.

His Majesty The King of the United Kingdom of Great Britain and Ireland, and His Majesty The King of the United Kingdom of Portugal, Brazil, and Algarves, adhering to the Principles which They have manifested in the Declaration of the Congress of Vienna bearing date the 8th of February, 1815, and being desirous to fulfil faithfully, and to their utmost extent, the Engagement which they mutually contracted by the Treaty of the 22d January, 1815, and till the period shall arrive when, according to the tenor of the 4th Article of the said Treaty, His Most Faithful Majesty has reserved to Himself, in concert with His Britannic Majesty, to fix the time when the Trade in Slaves shall cease entirely and be prohibited in His Dominions; and His Majesty the King of the United Kingdom of Portugal, Brazil, and Algarves, having bound Himself by the 2d Article of the said Treaty to adopt. the Measures necessary to prevent His Subjects from all illicit Traffick in Slaves: and His Majesty The King of the United Kingdom of Great Britain and Ireland having on His part engaged, in conjunction with His Most Faithful Majesty, to employ effectual means to prevent Portuguese Vessels trading in Slaves, in conformity with the Laws of Portugal and the existing Treaties, from suffering any loss or hindrance from British Cruizers, Their said Majesties have accordingly resolved to proceed to the arrangement of a Convention for the attainment of these Objects, and have, therefore, named as Plenipotentiaries, ad hoc; viz.

His Majesty the King of the United Kingdom of Great Britain and Ireland, The Right Honourable Robert Stewart, Viscount Castlereagh, &c. &c.&c. and His Majesty the King of the United Kingdom of Portugal, Brazil, and Algarves, the Most Illustrious and Most Excellent Lord Don Pedro de Souza Holstein, Count of Palmella; &c. &c. &c. who, after having exchanged their respective Full Powers, found to be in good and due form, have agreed upon the following Articles :

1. The object of this Convention is, on the part of the two Governments, mutually to prevent their respective Subjects from carrying on an illicit Slave Trade.

The Two High Contracting Powers declare, that they consider as illicit any Traffick in Slaves carried on under the following circumstances :-First, Either by British Ships, and under the British Flag, or for the account of British Subjects, by any Vessel or under any Flag whatsoever.-Second, [1823-24.] 2 Y

By Portuguese Vessels, in any of the Harbours or Roads of the Coast of Africa, which are prohibited by the 1st Article of the Treaty of the 22d January, 1815.-Third, Under the Portuguese or British Flag for the account of the Subjects of any other Government.-Fourth, By Portuguese Vessels bound for any Port not in the Dominions of His Most Faithful Majesty.

2. The Territories in which the Traffick in Slaves continues to be permitted, under the Treaty of the 22d of January, 1815, to the Subjects of His Most Faithful Majesty, are the following:

First, The Territories possessed by the Crown of Portugal upon the Coast of Africa to the South of the Equator; that is to say, upon the Eastern Coast of Africa, the Territory lying between Cape Delgado and the Bay of Lourenço Marques; and upon the Western Coast, all that which is situated from the 8th to the 18th Degree of South Latitude. Second,-Those Territories on the Coast of Africa, to the South of the Equator, over which Ha Most Faithful Majesty has declared that He has retained His Rights; namely,

The Territories of Molembo and Cabinda, upon the Eastern Coast of Africa, from the 5th Degree 12th Minute, to the 8th Degree South Latitude.

3. His Most Faithful Majesty engages, within the space of 2 Months after the exchange of the Ratifications of this present Convention, to premulgate in his Capital, and in the other Parts of His Dominions, as soon as possible, a Law which shall prescribe the Punishment of any of His Subjects who may in future participate in an illicit Traffick of Slaves, and at the same time to renew the prohibition which already exists, to import Slaves into the Brazils under any Flag other than that of Portugal; and His Most Faithful Majesty engages to assimilate as much as possible the Legislation ef Portugal in this respect to that of Great Britain.

4. Every Portuguese Vessel which shall be destined for the Slave Trade, on any point of the African Coast where this Traffick still continues to be lawful, must be provided with a Royal Passport, conformable to the Modei annexed to this present Convention, and which Model forms an integral part of the same. The Passport must be written in the Portuguese Language, with an authentic Translation in English annexed thereto, and it must be signed, for those Vessels sailing from the Port of Rio Janeiro by the Minister of Marine; and for all other Vessels which may be intended fur the said Traffick, and which may sail from any other Ports of the Brazils, or from any other of the Dominions of His Most Faithful Majesty not in Europe, the Passports must be signed by the Governor in Chief of the Cap taincy to which the Port belongs; and as to those Vessels which may proceed from the Ports of Portugal, to carry on the Traffick in Slaves, their Passports must be signed by the Secretary of the Government for the Marine Department.

5. The Two High Contracting Powers, for the more complete attainment of their Object, namely, the Prevention of all illicit Traffick in Slaves on the part of their respective Subjects, mutually consent that the Ships of War e their Royal Navies, which shall be provided with Special Instructions 1-7 this purpose, as herein-after provided, may visit such Merchant Vessels f the Two Nations as may be suspected, upon reasonable grounds, of having * See Declaration, Page 701.

Slaves on board, acquired by an illicit Traffick, and in the event only of their actually finding Slaves on board may detain and bring away such Vessels, in order that they may be brought to Trial before the Tribunals established for this purpose, as shall herein-after be specified. Provided always, that the Commanders of the Ships of War of the Two Royal Navies, who shall be employed on this Service, shall adhere strictly to the exact tenor of the Instructions which they shall have received for this purpose.

As this Article is entirely reciprocal, the Two High Contracting Parties engage mutually to make good any Losses which their respective Subjects may incur unjustly, by the arbitrary and illegal detention of their Vessels. It being understood that this Indemnity shall invariably be borne by the Government whose Cruizer shall have been guilty of the arbitrary Detention: Provided always, that the Visit and Detention of Slave Ships, specified in this Article, shall only be effected by those British or Portuguese Vessels which may form part of the Two Royal Navies, and by those only of such Vessels which are provided with the Special Instructions annexed to the present Convention.

6. No British or Portuguese Cruizer shall detain any Slave Ship not having Slaves actually on board; and, in order to render lawful the Detention of any Ship, whether British or Portuguese, the Slaves found on board such Vessel must have been brought there for the express purpose of the Traffick, and those on board Portuguese Ships must have been taken from that part of the Coast of Africa where the Slave Trade was prohibited by the Treaty of the 22d of January, 1815.

7. All Ships of War of the Two Nations, which shall hereafter be destined to prevent the illicit Traffick in Slaves, shall be furnished by their own Government with a copy of the Instructions annexed to the present Convention, and which shall be considered as an integral part thereof.

These Instructions shall be written in Portuguese and English, and signed for the Vessels of each of the Two Powers by the Ministers of their respective Marine.

The Two High Contracting Parties reserve the faculty of altering the said Instructions, in whole or in part, according to circumstances; it being however well understood, that the said Alterations cannot take place but by common Agreement, and by the consent of the Two High Contracting Parties.

8. In order to bring to Adjudication, with the least delay and inconvenience, the Vessels which may be detained for having been engaged in an illicit Traffick of Slaves, there shall be established, within the space of a Year at furthest from the Exchange of the Ratifications of the present Convention, Two Mixed Commissions, formed of an equal Number of Individuals of the Two Nations, named for this purpose by their respective Sovereigns.

These Commissions shall reside, One in a Possession belonging to His Britannic Majesty, the Other within the Territories of His Most Faithful Majesty; and the Two Governments, at the period of the Exchange of the Ratifications of the present Convention, shall declare, each for its own Dominions, in what Places the Commissions shall respectively reside. Each of the Two High Contracting Parties reserving to itself the Right of changing

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The Ten Eich Contracting Partes have agreed that the Proprietors of Vessels captured by the Brush Crizers ranaut claim Compensation for a larger number of Slaves than that which, according to the existing Laws of Portugal, they were permitted to ransport, according to the Rate of Tonnage of the captured Vessel.

The Tvo High Contracing Parties are sally agreed, that every Por tuguese Vessel captured with Saves on board &e the Traffick, which sha be proved to have been embarksi will the Territories of the Coast of Africa situated to the North of Cape Primas, and not belonging to the Crown of Portugal, as well as all Portuguese Vessels captured with Slaves on board for the Traffick, 6 months after the Exchange of the Ratifications of the Treaty of the 22d of Jiantry, 1815, and on which it can be proved, that the aforesaid Slaves were embarked in the Roadsteads of the Coast of Africa situated to the North of the Equator, shall not be entitled to claim any Indemnification.

10. His Britannic Majesty engages to pay, within the space of a Year at farthest from the Decision of each Case, to the Individuals having a just Claim to the same, the Sums which shall be granted to them by the Com missions named in the preceding Articles.

11. His Britannic Majesty formally engages to pay the £300,000 of Indemnification, stipulated by the Convention of the 21st of January, 1815, in favour of the Proprietors of Portuguese Vessels captured by Brinsh Cruizers up to the period of the 1st of June, 1814, in the manner following: viz. the first Payment of £150,000, six months after the exchange of the Ratifications of the present Convention; and the remaining £150,000, 28 well as the Interest at 5 per Cent, due upon the total Sum, from the day of the exchange of the Ratifications of the Convention of the 21st of January,