During the winter of 1849-50, Hon. Jeremiah Clemens of Alabama made a speech in the United States senate, in which he claimed that northern mechanics and laborers stood upon a level with southern slaves, and that the lot of the latter was in fact envious when compared with that of the former classes. This speech at once called out from Hon. John P. Hale, then a member of the senate, a reply in keeping with the demands of the occasion and with the great powers of Mr. Hale as an orator. Soon after, a meeting of the mechanics of Dover was held, at which Mr. Wallingford presided, and at which resolutions expressing the feelings of the meeting toward Mr. Clemens's speech were passed, and a copy furnished to that gentleman by Mr. Wallingford. Upon the receipt of these resolutions, Senator Clemens published in the _New York Herald_ a letter addressed to Mr. Wallingford, propounding ten questions. These questions were framed, evidently, with the design, not so much of getting information about the actual condition of the workingmen of the free states as to draw from Mr. Wallingford some material that could be turned to the disadvantage of the system of free labor. Mr. Wallingford replied through the press, February 6, 1850, in a letter which at once answered the impulsive and haughty "owner of men," and triumphantly vindicated our system of free labor. For directness of reply, density, and clearness of style, few published letters have equaled it. It must have afforded Mr. Clemens material for reflection, and it is not known that he afterwards assailed the workingmen of the nation. From the formation of the Republican party, Mr. Wallingford has been one of its active supporters. Though no man has been more decided in his political convictions, or more frank in giving expression to them, no one has been more tolerant of the opinions of others, or more scrupulous in his methods of political warfare. Despising the tricks of the mere partisan, and abhorring politics as a trade, he has always been content to rest the success of his party on an open, free discussion of the issues involved. Not deeming it consistent with his obligations to his company to spend his time in the public service, he has refused to accede to the repeated propositions of his political friends to support him for important official positions; but he was a member of the constitutional constitution of 1876, and presidential elector for 1876, casting his vote for Hayes and Wheeler. He is and has been for years, president of the Savings Bank for the County of Strafford, a director of the Strafford National Bank, president of the Dover Library Association, and a director in the Dover & Winnipesaukee Railroad. In his religious belief Mr. Wallingford is a Unitarian, and an active member of the Unitarian society in Dover. GENERAL WALTER HARRIMAN. BY REV. S. C. BEANE.