Resuming his professional duties, at first in partnership with Mr. Gardiner and afterward alone, he became counsel to the city department of taxes and assessments, with an annual salary of ten thousand dollars, but he abruptly resigned the position when the Tammany Hall city officials attempted to coerce the Republicans connected with the municipal departments. When the next presidential election drew near, General Arthur entered enthusiastically into the support of General Grant, and was made chairman of the Grant Central Club, of New York. He also served as chairman of the executive committee of the Republican State Committee of New York. In 1871, he formed the afterwards well-known firm of Arthur, Phelps, Knevals, and Ransom. President Grant, without solicitation and unexpectedly, appointed General Arthur collector of the port of New York, on the twentieth of November, 1871. He accepted the position with much hesitation, but it met with the general approval of the business community, many of the merchants having become personally acquainted with his business ability during the war. He instituted many reforms in the management of the custom-house, all calculated to simplify the business and to divest it, to a great extent, of all the details and routine so vexatious to the mercantile classes. The number of his removals during his administration was far less than during the rule of any other collector since 1857, and the expense of collecting the duties was far less than it had been for years. So satisfactory was his management of the custom-house, that, upon the close of his term of service, December, 1875, he was renominated by President Grant. The nomination was unanimously confirmed by the Senate without reference to a committee, a compliment very rarely paid, except to ex-senators. He was the first collector of the port of New York, with one or two exceptions, who in fifty years ever held the office for more than the whole term of four years. Two years later General Arthur was superseded as collector by General Merritt. The Honorable John Sherman, secretary of the treasury, on being questioned as to the cause of the removal of General Arthur as collector of customs at New York, said:-- "I have never said one word impugning General Arthur's honor or integrity as a man and a gentleman, but he was not in harmony with the views of the administration in the management of the custom-house. I would vote for him for Vice-President a million times before I would vote for W.H. English, with whom I served in Congress." General Arthur, in a letter written by him to Secretary Sherman, on his administration of the New York custom-house, said:--