I wish I could say the prizes were anything like numerous; for perhaps one-half of all the vessels we board are illicit slaveholders, and yet we cannot lay a finger on them. One may well ask why? It has been said, and it is generally believed in England, that our cruisers are sweeping the Indian Ocean of slavers, and stamping out the curse. But the truth is very different, and all that we are doing, or able at present to do, is but to pull an occasional hair from the hoary locks of the fiend Slavery. This can be proved from the return-sheets, which every cruiser sends home, of the number of vessels boarded, generally averaging one thousand yearly to each man-o'-war, of which the half at least have slaves or slave-irons on board; but only two, or at most three, of these will become prizes. The reason of this will easily be understood, when the reader is informed, that the Sultan of Zanzibar has liberty to take any number of slaves from any one portion of his dominions to another: these are called household slaves; and, as his dominions stretch nearly all along the eastern shores of Africa, it is only necessary for the slave-dealer to get his sanction and seal to his papers in order to steer clear of British law. This, in almost every case, can be accomplished by means of a bribe. So slavery flourishes, the Sultan draws a good fat revenue from it, and the Portuguese--no great friends to us at any time--laugh and wink to see John Bull paying his thousands yearly for next to nothing. Supposing we liberate even two thousand slaves a year, which I am not sure we do however, there are on the lowest estimate six hundred slaves bought and sold daily in Zanzibar mart; two hundred and nineteen thousand in a twelvemonth; and, of our two thousand that are set free in Zanzibar, most, if not all, by-and-bye, become bondsmen again.