_Additional { TYPICAL TEBU 442 Plate_ { { TERMIT PEAK AND WELL 442 MAPS AND DIAGRAMS PAGE MAP SHOWING THE TRADE ROADS OF NORTH AFRICA 5 DIAGRAMMATIC MAP SHOWING THE DRAINAGE OF THE CENTRAL SAHARA 29 MAP OF DAMERGU AND NEIGHBOURING PARTS: 1/2,000,000 _facing p._ 36 SKETCH MAP OF AIR AND THE DIVISIONS OF THE SOUTHLAND 40 DIAGRAM SHOWING TRIBAL DESCENT AMONG THE TUAREG 130 DIAGRAM SHOWING THE GOVERNMENT OF THE AIR TUAREG 144 MAP SHOWING LEO’S SAHARAN AREAS 331 DIAGRAM SHOWING IBN KHALDUN’S BERBER TRIBES 341 DIAGRAM SHOWING THE MIGRATIONS OF THE AIR TUAREG 388 GENEALOGY OF CERTAIN KINGS OF AIR 465 MAP OF AIR AND ADJACENT PARTS: 1/2,000,000 _At end_ * * * * * NOTE The general map at the end of the volume was prepared by the Royal Geographical Society from data collected by the author supplementing existing maps published in France and described in the text of the book. The two drawings (Plates 38 and 39) were executed in England by T. A. Emmet from sketches made in Air. Plates Nos. 2, 15 (lower), 34 are from photographs taken by Angus Buchanan. All the other maps, diagrams, pictures, and photographs were prepared by the author from material collected in 1922. NOTE The name “Air” is a dissyllable word: the vowels are pronounced as in Italian according to the general system of transliteration, which follows, wherever possible, the rules laid down by the Committee of the Royal Geographical Society on the Spelling of Proper Names. In the Tuareg form of Berber, _t_ before _i_ or similar vowel, especially in the feminine possessive particle “tin,” very often assumes a sound varying between a hard explosive _tch_ and a soft liquid dental, such as is found in the English word “tune.” This modification of the sound _t_ is written _t’_, wherever it is by usage sufficiently pronounced to be noticeable. The pronunciation of Tuareg words follows the Air dialect, which often differs from the northern speech. Letters are only accented where it is important to avoid mispronunciation, as in Fadé and Emilía: a final _e_, as in Assode, which is a trisyllable, should always be pronounced even if not accented. The nasal _n_ occurring in such words as Añastafidet is written _ñ_.