Giorgio Maria Ciaceri was a Jesuit missionary from Sicily who spent about ten years in North Africa during the mid Nineteenth century. From his Jesuit center located near Algiers, he travelled all over Algeria and arrived until Tunis where he spent the last period of his journey. His travelogue, published in 1885–86, is almost unknown to scholarly research and is a very rich source for anthropological, ethnographical, historical, social, religious and linguistic information about the countries and the cultures he visited. The present article deals with his travelogue and attempts to draw the attention to some aspects of his work and in particular to the linguistic issues that it contains.