To step on board a steamer in a Spanish port, and three hours later to land in a country without a guide-book, is a sensation to rouse the hunger of the repletest sight-seer.

The sensation is attainable by any one who will take the trouble to row out into the harbour of Algeciras and scramble onto a little black boat headed across the straits. Hardly has the rock of Gibraltar turned to cloud when one's foot is on the soil of an almost unknown Africa. Tangier, indeed, is in the guide-books; but, cuckoo-like, it has had to lays its egg in strange nests, and the traveller who wants to find out about it must acquire a work dealing with some other country—Spain or Portugal or Algeria. There is no guide-book to Morocco, and no way of knowing, once one has left Tangier behind, where the long trail over the Rif is going to land one, in the sense understood by any one accustomed to European certainties. The air of the unforeseen blows on one from the roadless passes of the Atlas.