The Signatory Powers exercising sovereign rights or authority in African territories will continue to watch over the preservation of the native populations and to supervise the improvement of the conditions of their moral and material well-being. They will, in particular, endeavour to secure the complete suppression of slavery in all its forms and of the slave trade by land and sea.
They will protect and favour, without distinction of nationality or of religion, the religious, scientific or charitable institutions and undertakings created and organized by the nationals of the other Signatory Powers and of States, Members of the League of Nations, which may adhere to the present Convention, which aim at leading the natives in the path of progress and civilisation. Scientific missions, their property and their collections, shall likewise be the objects of special solicitude.
Freedom of conscience and the free exercise of all forms of religion are expressly guaranteed to all nationals of the Signatory Powers and to those under the jurisdiction of States, Members of the League of Nations, which may become parties to the present Convention. Similarly, missionaries shall have the right to enter into, and to travel and reside in, African territory with a view to prosecuting their calling.
The application of the provisions of the two preceding paragraphs shall be subject only to such restrictions as may be necessary for the maintenance of public security and order, or as may result from the enforcement of the constitutional law of any of the Powers exercising authority in African territories.