L'expédition du "John Murray" dans l'océan indien

Geographers have already been asking for a long time for studies to be carried out in the Arabic Sea. This Sea is bordered to the North and to the West by Arabia and Africa; regions where it seldom rains and, consequently, with a very low alluvium input. It is under the influence of the Red Sea through the Gulf of Aden, a basin more than 1 000 fathoms deep, with a low threshold of less 100 fathoms deep to the South. It is also under the influence of the Gulf of Oman, in which opens the very shallow Persian Sea where an important drainage of the earth brought by the Tigris and the Euphrates takes place.