A few years ago I published a little book on Egypt, entitled Pyramids and Progress, which Lord Cromer allowed me to dedicate to him. At that time the Sudan 'was in the hands of the Dervishes and inaccessible. Now, thanks to Lord Kitchener, it is under the British ﬂag, and being open to all the world, is likely to be visited, in yearly increasing numbers, by the pleasure seeker, the archaeologist, and the promoter of commercial enterprise. In the hope of being of service to some of these, I have undertaken my present task, and shall be more than repaid if I succeed in arousing in them one tithe of the interest which I have experienced in the study of this remarkable country. The new territory is enormous compared with Egypt, and in consequence a larger volume, and one on somewhat different lines from my earlier work, was necessary. Lord Kitchener asked me to dedicate the book to him, and this compliment inspired me with a desire to do my best.