A journal, comprising an account of the loss of the Brig Commerce : of Hartford, (Con.) James Riley, master, upon the western coast of Africa, August 28th, 1815 : also of the slavery and sufferings of the author and the rest of the crew upon the desert of Zahara, in the years 1815, 1816, 1817 ; with accounts of the manners, customs, and habits of the wandering Arabs ; also, a brief historical and geographical view of the continent of Africa /