Several isolated volcanic hills crop out on the shore line between Aden and the straits; the most remarkable are J.
Capuchins: Aden and Arabia, India (dioceses of Agra, Allahabad, Lahore), Seychelles, Eritrea (Red Sea), Gallas, Cephalonia, Trebizond, Mardin, Crete, Caroline Islands, Araucania, Brazil, Bulgaria.
Manzoni estimated their number in Sana in 1878 at 1700 out of a total population of 20,000; at Aden they are a numerous and wealthy community, with agents in most of the towns of Yemen.
In the Tehama occasional showers fall during the winter months; at Aden the average rainfall for the year is 2.97 in., but during 1904 only 0.5 in.
The population of Aden proper in 1915 was 36,900 and of the whole settlement 46,000, of whom about 23,000 were Arabs and a large part of the remainder Somalis.
The harbour - known as Bandar Tawiya or Aden-West Bay - lies between the main and Little Aden peninsulas (Jebel Ihsan or Hasan); it extends 8 m.
Thereupon Great Britain, partly to secure the route to the East via the Suez Canal, which the occupation of the country by another power might menace, occupied Zaila, Berbera and Bulhar, officials being sent from Aden to govern the ports.
British Somaliland The British Somaliland protectorate extends along the Gulf of Aden for about 400 m.
The incline is uniformly to the south-east, and apart from the few coast streams that reach the Gulf of Aden during the rains, all the running waters are collected in three rivers - the Nogal in the north, the Webi Shebeli in the centre, and the Juba (q.v.) I See also Abyssinia.
The whole region is characterized by a remarkable degree of physical uniformity, and may be broadly described as a vast plateau of an average elevation of 3000 ft., bounded westwards by the Ethiopian and Galla highlands and northwards by an inner and an outer coast range, skirting the south side of the Gulf of Aden in its entire length from the Harrar uplands to Cape Guardafui.