Alexandria Gazette & Daily Advertiser

From the Boston Evening Gazette, of July 14.

On Thursday last, fourteen men, composing part of the crew of the schooner Jeune Eugene, captured on the Coast of Africa, by the U. S. schr. Alligator, Lt. Com. Stockton, were placed under the custody of the Marshal of this District, and conducted by him under a guard of marines from the Navy Yard, in Charlestown, to Boston; and placed in close confinement. In the afternoon, the examination of the facts connected with their capture took place before His Hon. John Davis, the District Judge.

It appeared in evidence, from the United States officers and seamen, who were examined-that the commander of the Alligator, on the 17th of May last, having boarded a small sloop north of the mouth of the river Gallinas, and about ten miles off the Coast of Africa, received information of a vessel not being far distant, which apparently was engaged in the slave trade, and prepared to take in slaves from the shore. The sloop was immediately manned from the Alligator, and placed under the command of Mr. Dickson, master's mate, who the same evening, on discovering the schooner, immediately approached her. The sloop was hailed in English first, and afterwards in French, telling them to keep off. Presently a fire of small arms was opened from the schooner, but the sloop laid her along side--the men immediately boarded and drove the crew below. Some pistols were fired by the boarders, and one of the crew of the schr. was wounded. She was evidently ready to take in slaves, having 52 water casks filled, 32 large bags of rice, and some bbls of beef and pork on board. The birth deck was prepared fore & aft, with cleets, &c. for Slaves. A bulk head to separate the men from the women was erected, and gratings were over the hatches.

The captain and doctor were on shore;-- no Americans were found on board.

On the 20th of May, the schooner was despatched for the United States, under the charge of Mr. Wm. M'Kean, midshipman, with the vessel's papers for adjudication. On her passage here the second mate died he said she was a Baltimore vessel raised upon. The first mate, the wounded man, and another, were left on board the Alligator.

The schooner's papers were verified by Mr. M'Kean, which appear to have been issued at Basse Terre, Guadaloupe, and declare her to be an American bottom, built in 1818, in the United States. She has now a French register or sea letter, and by her Roll d'Equipage, it appears, her Master's name was Victor Martin. It also seemed by the papers that she was French property, and had cleared out for the Coast of Malaguetta. Some other immaterial facts were proved-when the prisoners, consisting of three Spaniards, two Italians, and eight Frenchmen, were remanded for further examination.

The prisoners were this day re-examined. The testimony, though it afforded the strongest presumption that the Jeune Eugene was engaged in a voyage for slaves, and fully justified Capt. Stockton in sending her to the United States, yet not being strong enough to prove her to belong to American owners, the crew were set at liberty by the Judge.--The French and Spanish Consuls were present. We do not understand what proceedings are intended to be adopted in relation to the vessel. It is unfortunate that the captain was on shore in Africa--the first mate detained on board the Alligator, and that the second mate should have died on his passage home.