Last evening the church at the corner of Prince and Marion streets was filled with an intelligent audience of white and colored people, to hear Dr. Pennington relate the circumstance connected with the arrest of his brother and nephews.  He showed, that he attempted to afford his brother the assistance of counsel, but was unable to do so, the officers at the Marshal’s office having deceived him in relation to the time the trial was to take place before the Commissioners.  Hon. E.F.  Culver next addressed the audience, showing, that a great injustice had been done to the brother of Dr. Pennington, and though he, up to that time, had advocated peace, he now had the spirit to tear down the building over the Marshal’s head.  Intense interest was manifested during the proceedings, and much sympathy in behalf of Dr. Pennington.

    THE FUGITIVE SLAVES IN BALTIMORE.

The U.S.  Marshal, A.T.  Hillyer, Esq., received a dispatch this morning from officers Horton and Dellugelis, at Baltimore, stating, that they had arrived there with the three slaves, arrested here yesterday (the Penningtons), the owners accompanying them.  The officers will return to New York, this evening.—­N.Y.  Express, 27_th_.

    NEW YORK, May 30.

The Rev. Dr. Pennington has received a letter from Mr. Grove, the claimant of his brother, who was recently taken back from this city, offering to sell him to Dr. Pennington, should he wish to buy him, and stating, that he would await a reply, before “selling him to the slave-drivers.”  Mr. Groce, who accompanied his “sweet heart,” Matilda, in the same train which conveyed the Penningtons to New York, had reason to apprehend danger to all the Underground Rail Road passengers, as will appear from his subjoined letter: 

        ELMIRA, May 28th.

DEAR LUKE:—­I arrived home safe with my precious charge, and found all well.  I have just learned, that the Penningtons are taken.  Had he done as I wished him he would never have been taken.  Last night our tall friend from Baltimore came, and caused great excitement here by his information.  The lady is perfectly safe now in Canada.  I will write you and Mr. Still as soon as I get over the excitement.  This letter was first intended for Mr. Gains, but I now send it to you.  Please let me hear their movements.

        Yours truly,

        C.L.  GROCE.

But sadly as this blow was felt by the Vigilance Committee, it did not cause them to relax their efforts in the least.  Indeed it only served to stir them up to renewed diligence and watchfulness, although for a length of time afterwards the Committee felt disposed, when sending, to avoid New York as much as possible, and in lieu thereof, to send via Elmira, where there was a depot under the agency of John W. Jones.  Mr. Jones was a true and prompt friend of the fugitive, and wide-awake with regard to Slavery and slave-holders, and slave hunters, for he had known from sad experience in Virginia every trait of character belonging to these classes.