It would seem that the coming of his brother and sons so overpowered the Doctor that he forgot how imminent their danger was. The meeting and interview was doubtless very joyous. Few perhaps could realize, even in imagination, the feelings that filled their hearts, as the Doctor and his brother reverted to their boyhood, when they were both slaves together in Maryland; the separation—the escape of the former many years previous—the contrast, one elevated to the dignity of a Doctor of Divinity, a scholar and noted clergyman, and as such well known in the United States, and Great Britain, whilst, at the same time, his brother and kin were held in chains, compelled to do unrequited labor, to come and go at the bidding of another. Were not these reflections enough to incapacitate the Doctor for the time being, for cool thought as to how he should best guard against the enemy? Indeed, in view of Slavery and its horrid features, the wonder is, not that more was not done, but that any thing was done, that the victims were not driven almost out of their senses. But time rolled on until nearly twenty-four hours had passed, and while reposing their fatigued and weary limbs in bed, just before day-break, hyena-like the slave-hunters pounced upon all three of them, and soon had them hand-cuffed and hurried off to a United States' Commissioner's office. Armed with the Fugitive Law, and a strong guard of officers to carry it out, resistance would have been simply useless. Ere the morning sun arose the sad news was borne by the telegraph wires to all parts of the country of this awful calamity on the Underground Rail Road.

Scarcely less painful to the Committee was the news of this accident, than the news of a disaster, resulting in the loss of several lives, on the Camden and Amboy Road, would have been to its managers. This was the first accident that had ever taken place on the road after passengers had reached the Philadelphia Committee, although, in various instances, slave-hunters had been within a hair's breadth of their prey.

All that was reported respecting the arrest and return of the Doctor's kin, so disgraceful to Christianity and civilization, is taken from the Liberator, as follows:

THREE FUGITIVE SLAVES ARRESTED IN NEW YORK, AND GIVEN UP TO THEIR OWNERS.

NEW YORK, May 25th.

About three o'clock this morning, three colored men, father and two sons, known as Jake, Bob, and Stephen Pennington, were arrested at the instance of David Smith and Jacob Grove, of Washington Co., Md., who claimed them as their slaves. They were taken before Commissioner Morton, of the United States Court, and it was understood that they would be examined at 11 o'clock; instead of that, however, the case was heard at once, no persons being present, when the claimnants testified that they were the owners of said slaves and that they escaped from their service at Baltimore, on Sunday last.

From what we can gather of the proceedings, the fugitives acknowledged themselves to be slaves of Smith and Grove. The commissioner considering the testimony sufficient, ordered their surrender, and they were accordingly given up to their claimants, who hurried them off at once, and they are now on their way to Baltimore. A telegraph despatch has been sent to Philadelphia, as it is understood an attempt will be made to rescue the parties, when the cars arrive. There was no excitement around the commissioner's office, owing to a misunderstanding as to the time of examination. The men were traced to this city by the claimants, who made application to the United States Court, when officers Horton and De Angeles were deputied by the marshal to effect their arrest, and those officers, with deputy Marshal Thompson scoured the city, and finally found them secreted in a house in Broome St. They were brought before Commissioner Morton this morning. No counsel appeared for the fugitives. The case being made out, the usual affidavits of fear of rescue were made, and the warrants thereupon issued, and the three fugitives were delivered over to the U.S. Marshal, and hurried off to Maryland. They were a father and his two sons, father about forty-five and sons eighteen or nineteen. The evidence shows them to have recently escaped. The father is the brother of the Rev. Dr. Pennington, a highly respected colored preacher of this city.

NEW YORK, May 28.

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, 27th.

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.

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 viâ 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.

In the midst of the Doctor's grief, friends of the slave soon raised money to purchase his brother, about $1,000; but the unfortunate sons were doomed to the auction block and the far South, where, the writer has never exactly learned.