Article XI
The powers shall communicate to one another information relating to the traffic in fire-arms and ammunition, the permits granted, and the measures of repression in force in their respective territories.
Article XII
The powers engage to adopt or to propose to their respective legislative bodies the measures necessary everywhere to secure the punishment of infringers of the prohibitions contained in Articles VIII and IX, and that of their accomplices, besides the seizure and confiscation of the prohibited arms and ammunition, either by fine or imprisonment, or by both of these penalties, in proportion to the importance of the infraction and in accordance with the gravity of each case.
Article XIII
The signatory powers that have possessions in Africa in contact with the zone specified in Article VIII, bind themselves to take the necessary measures for preventing the introduction of fire-arms and ammunition across their inland frontiers into the regions of said zone, at least that of improved arms and cartridges.
Article XIV
The system stipulated in Articles VIII to XIII, shall remain in force for twelve years. In case none of the contracting parties shall have given notice twelve months before the expiration of this period, of its intention to put an end to it, or shall have demanded its revision, it shall remain obligatory for two years longer, and shall thus continue in force from two years to two years.
Chapter II. Caravan Routes and Transportation of Slaves by land
Article XV
Independently of the repressive or protective action which they exercise in the centres of the slave-trade, it shall be the duty of the stations, cruisers and posts, whose establishment is provided for in Article II, and of all other stations established or recognized by Article IV, by each government in its possessions, to watch, so far as circumstances shall permit, and in proportion to the progress of their administrative organization, the roads traveled in their territory by slave-dealers, to stop convoys on their march, or to pursue them wherever their action can be legally exercised.
Article XVI
In the regions of the coasts known to serve habitually as places of passage or terminal points for slave-traffic coming from the interior, as well as at
