marshal for the district of South Carolina.  They were first placed in Castle Pinckney, and afterwards in Fort Sumter, for safe-keeping, and were detained there until the 19th September, when the survivors, 271 in number, were delivered on board the United States steamer Niagara to be transported to the coast of Africa under the charge of the agent of the United States, pursuant to the provisions of the act of the 3d March, 1819, “in addition to the acts prohibiting the slave trade.”  Under the second section of this act the President is “authorized to make such regulations and arrangements as he may deem expedient for the safe-keeping, support, and removal beyond the limits of the United States of all such negroes, mulattoes, or persons of color” captured by vessels of the United States as may be delivered to the marshal of the district into which they are brought, “and to appoint a proper person or persons residing upon the coast of Africa as agent or agents for receiving the negroes, mulattoes, or persons of color delivered from on board vessels seized in the prosecution of the slave trade by commanders of United States armed vessels.”

A doubt immediately arose as to the true construction of this act.  It is quite clear from its terms that the President was authorized to provide “for the safe-keeping, support, and removal” of these negroes up till the time of their delivery to the agent on the coast of Africa, but no express provision was made for their protection and support after they had reached the place of their destination.  Still, an agent was to be appointed to receive them in Africa, and it could not have been supposed that Congress intended he should desert them at the moment they were received and turn them loose on that inhospitable coast to perish for want of food or to become again the victims of the slave trade.  Had this been the intention of Congress, the employment of an agent to receive them, who is required to reside on the coast, was unnecessary, and they might have been landed by our vessels anywhere in Africa and left exposed to the sufferings and the fate which would certainly await them.

Mr. Monroe, in his special message of December 17, 1819, at the first session after the act was passed, announced to Congress what in his opinion was its true construction.  He believed it to be his duty under it to follow these unfortunates into Africa and make provision for them there until they should be able to provide for themselves.  In communicating this interpretation of the act to Congress he stated that some doubt had been entertained as to its true intent and meaning, and he submitted the question to them so that they might, “should it be deemed advisable, amend the same before further proceedings are had under it.”  Nothing was done by Congress to explain the act, and Mr. Monroe proceeded to carry it into execution according to his own interpretation.  This, then, became the practical construction.