So much has already been written on the topography of Aden by travellers who have visited the place, either from motives of curiosity, or on their way to more distant regions, also by individuals whose duties have detained them there, that I fear any information which I can add to what has already been made known, will be of little interest; however, in compliance with the request of a friend, I forward such remarks and observations as a permanent residence of six years has enabled me to collect.