GEORGE MITCHELL, a young colored man, at San Jose, California, arrested and taken before Justice Allen, April, 1855, "charged with owing service and labor to one Jesse C. Cooper, of Tennessee." Mitchell was brought into California by his then owner, in 1849, the year before the enactment of the Fugitive Slave Law. His arrest was made, under a Fugitive Slave Law of California. By habeas corpus the case was carried before Judge C.P. Hester, of the District Court. Mitchell was discharged on the ground (we believe) that the California Law was unconstitutional; also that the proceedings were "absolutely void." On the 21st April (or May) "another attempt was made to reduce George to slavery at San Francisco." He was brought before the United States District Court, Judge Hoffman presiding, claimed under the United States Fugitive Law as the property of the above-named Cooper. [The result of the trial not known.]—San Jose Telegraph.

At Dayville, Connecticut, June 13, 1855, an attempt was made to seize a fugitive slave; "but the citizens interfered and the fugitive escaped." He was claimed by a resident of Pomfret, who said he had bought him in Cuba.—Hartford Religious Herald.

At Burlington, Iowa, a colored man, called DICK, was arrested and taken before United States Commissioner Frazee. "Much excitement was caused." He was claimed as belonging to Thomas Ruthford, Clark County, Missouri. Dick was discharged as not being the man claimed. (June, 1855.)

A white girl, fourteen years of age, daughter of Mr. Samuel Godshall, of Downingtown, Chester County, Pennsylvania, while walking upon the road, was seized by two men, a plaster put upon her mouth, and she taken in a close carriage in the direction of Maryland. After going twelve miles, they put her out of the carriage, "in a secluded and woody portion of the country, threatening to kill her if she made any alarm, when they drove away as fast as they could." Some colored people met her, got the plaster off her mouth, and aided her home. It was supposed the kidnappers mistook her for a mulatto girl; but discovering their blunder dismissed her.—Philadelphia Ledger, July 9, 1855.

The Norristown (Penn.) Herald relates a case similar to the preceding. Benjamin Johnson, a white lad of fifteen, on his way from his father's, at Evansburg, to S. Jarrett's, near Jeffersonville, was invited to ride by a man in a carriage. The man took him by an unusual route; night coming on, the boy was alarmed and attempted to escape, "when the villain caught him and drove off at full speed, and by threats and blows prevented him from making any alarm." He drove to a distance of fifteen miles beyond Jeffersonville, when the boy succeeded in making his escape. (July, 1855.)

JANE JOHNSON, and her two sons, (colored,) brought into Philadelphia (on their way to New York and thence to Nicaragua) by John H. Wheeler. Stopped to dine at Bloodgood's Hotel. Jane there made known her desire to be free. Information of the same was conveyed to Passmore Williamson, Secretary of the Pennsylvania Abolition Society, an old association founded by Benjamin Franklin, Benjamin Rush, and others. Mr. Williamson went to the hotel, and found that the party had gone to the steamboat, at the foot of Walnut Street. He proceeded thither, found them, and told the mother that she and her sons had been legally made free by being brought by their master into a free State. After some delay, Jane rose to leave the boat. Wheeler endeavored to detain her. Williamson held Wheeler back, and the woman went on shore, a number of colored persons taking up the boys and carrying them from the boat. They were enabled to escape. (July 18, 1855.)

The celebrated case of PASSMORE WILLIAMSON followed, before Judge Kane, of the United States District Court. (See "Case of Passmore Williamson," reported in full, and published in Philadelphia, by Uriah Hunt & Son, 1856.) On the 27th July, Mr. Williamson was committed to Moyamensing Prison, by Judge Kane, "for a contempt of the court in refusing to answer to the writ of habeas corpus;" Mr. W. having answered that he had not, and never had had, the custody of the three alleged slaves, and therefore could not produce them in court. Mr. Williamson was kept in prison until November 3d, when he was discharged by Judge Kane, the technical "contempt" having been removed.

CELESTE, a mulatto woman, claimed as a slave, before Judge Burgoyne, Cincinnati, Ohio. It appeared that she was brought to Cincinnati by her master, and she was set free.—Cincinnati Gazette, July 7, 1855.

Two fugitives, in Indiana, (September, 1855,) requested aid of the conductor of the Madison and Indianapolis Railroad. The aid given was to take them back to Madison, whence they were conveyed over the river to Kentucky. Before leaving that State they had been hunted and attacked by dogs. These they had despatched with their knives. The conductor was dismissed from his position. An agent of the express company was said to have aided him in the surrender of the men.—Madison Courier.

JACK, a colored boy, nine years of age, "claimed by Joseph Tucker, of Mobile, as his slave, was sent back to his master from Boston, in the brig Selma, Captain Rogers, on the 18th inst." (October, 1855.)—Boston Times.