The following testimony of Rev. Horace Moulton, now a minister of the Methodist Episcopal Church, in Marlborough, Mass., who resided some years in Georgia, reveals some of the secrets of the slave-smugglers, and the connivance of the Georgia authorities at their doings.  It is contained in a letter dated February 24, 1839.

“The foreign slave-trade was carried on to some considerable extent when I was at the south, notwithstanding a law had been made some ten years previous to this, making this traffic piracy on the high seas.  I was somewhat acquainted with the secrets of this traffic, and, I suppose, I might have engaged in it, had I so desired.  Were you to visit all the plantations in South Carolina, Georgia, Alabama, and Mississippi, I think you would be convinced that the horrors of the traffic in human flesh have not yet ceased.  I was surprised to find so many that could not speak English among the slaves, until the mystery was explained.  This was done, when I learned that slave-cargoes were landed on the coast of Florida, not a thousand miles from St. Augustine.  They could, and can still, in my opinion, be landed as safely on this coast as in any port of this continent.  You can imagine for yourself how easy it was to carry on the traffic between this place and the West Indies.  When landed on the coast of Florida, it is an easy matter to distribute them throughout the more southern states.  The law which makes it piracy to traffic in the foreign slave trade is a dead letter; and I doubt not it has been so in the more southern states ever since it was enacted.  For you can perceive at once, that interested men, who believe the colored man is so much better off here than he possibly can be in Africa, will not hesitate to kidnap the blacks whenever an opportunity presents itself.  I will notice one fact that came under my own observation, which will convince you that the horrors of the foreign slave-trade have not yet ceased among our southern gentry.  It is as follows.  A slave ship, which I have reason to believe was employed by southern men, came near the port of Savannah with about FIVE HUNDRED SLAVES, from Guinea and Congo.  It was said that the ship was driven there by contrary winds; and the crew, pretending to be short of provisions, run the ship into a by place, near the shore, between Tybee Light and Darien, to recruit their stores.  Well, as Providence would have it, the revenue cutter, at that time taking a trip along the coast, fell in with this slave ship, took her as a prize, and brought her up into the port of Savannah.  The cargo of human chattels was unloaded, and the captives were placed in an old barracks, in the fort of Savannah, under the protection of the city authorities, they pretending that they should return them all to their native country again, as soon as a convenient opportunity presented itself.  The ship’s crew of course were arrested, and confined in jail.  Now for the sequel of this history.  About one third part