Front matter
Reading edition
Lieut.-Colonel Jean Tilho, Gold Medallist of the R.G.S. 1919
Read at the Meeting of the Society, 19 January 1920. Map following p. 160.
[Note: The names in the text are spelled in accordance with the manuscript of Colonel Tilho, a few of the principal names—as Chad—in their English form, but the greater number in the French transliteration of Arabic. On the accompanying map the names are transliterated according to the G.S.G.S. rules for transposing from the French to the British system. The retention of the French spelling in the text has the double advantage of familiarizing the student with the two systems, and of preserving in some degree the character of the lecture, which was delivered in French.—Ed. G.J.]