ART.  XVIII.  The Spanish troops detained on board ship in the Port of Lisbon shall be given up to the Commander-in-Chief of the British army; who engages to obtain of the Spaniards to restore such French subjects, either military or civil, as may have been detained in Spain, without being taken in battle, or in consequence of military operations, but on occasion of the occurrences of the 29th of last May, and the days immediately following.

ART.  XIX.  There shall be an immediate exchange established for all ranks of prisoners made in Portugal since the commencement of the present hostilities.

ART.  XX.  Hostages of the rank of field-officers shall be mutually furnished on the part of the British army and navy, and on that of the French army, for the reciprocal guarantee of the present Convention.  The officer of the British army shall be restored on the completion of the articles which concern the army; and the officer of the navy on the disembarkation of the French troops in their own country.  The like is to take place on the part of the French army.

ART.  XXI.  It shall be allowed to the General-in-Chief of the French army to send an officer to France with intelligence of the present Convention.  A vessel will be furnished by the British Admiral to convey him to Bourdeaux or Rochefort.

ART.  XXII.  The British Admiral will be invited to accommodate His Excellency the Commander-in-Chief, and the other principal officers of the French army, on board of ships of war.

Done and concluded at Lisbon this 30th day of August, 1808.

     (Signed) GEORGE MURRAY, Quarter-Master-General.  KELLERMANN, Le
     General de Division.

We, the Duke of Abrantes, General-in-Chief of the French army, have ratified and do ratify the present Definitive Convention in all its articles, to be executed according to its form and tenor.

     (Signed) The Duke of ABRANTES. Head-Quarters—­Lisbon, 30 th
     August, 1808.

Additional Articles to the Convention of the 30th of August, 1808.

ART.  I. The individuals in the civil employment of the army made prisoners, either by the British troops, or by the Portugueze, in any part of Portugal, will be restored, as is customary, without exchange.

ART.  II.  The French army shall be subsisted from its own magazines up to the day of embarkation; the garrisons up to the day of the evacuation of the fortresses.

The remainder of the magazines shall be delivered over, in the usual form, to the British Government; which charges itself with the subsistence of the men and horses of the army from the above-mentioned periods till they arrive in France; under the condition of their being reimbursed by the French Government for the excess of the expense beyond the estimates, to be made by both parties, of the value of the magazines delivered up to the British army.