During 1845 young Bigelow wrote many editorials for the _Evening Post_ advocating the calling of a State Constitutional Convention, and asking for changes in the judiciary which that body actually made. In the spring of 1847 Bryant, wishing to train some one to succeed him, asked the young man to enter the office, but did not make an acceptable offer. A year and a half later he renewed the proposal through Tilden, saying that he would give a liberal compensation, and that when one of the partners, William G. Boggs, who had charge of the publishing, retired, he might come into the firm. Bigelow was pleased. “But,” he told Tilden, “I might as well say to you here at once that I should not think it worth while to consider for a moment any proposition to enter the _Evening Post_ office on a salary. Unless they want me in the firm, they don’t want me enough to withdraw me from my profession.” This was a wise refusal to give up his independence. The result was that after negotiations of several weeks, Boggs was induced to retire at once. Bigelow purchased three and one-tenth shares of the _Evening Post_ (there were ten in all) and two shares of the job office, for $15,000, taking possession as of the date Nov. 16, 1848; later, at a cost of $2,100, he increased his holdings to a full third. He had very little money saved, and none which he could spare, but he persuaded the large-hearted lawyer, Charles O’Conor, to endorse his note for $2,500, while he became indebted to Wm. C. Bryant & Co. for the rest. Like Bryant, Bigelow was glad to escape from law into journalism. “I have never for one instant looked back upon my former employment,” his unpublished journal runs, “but with regret for the time lost in it. I do not mean that all my time was lost; on the contrary, I am satisfied that my discipline at the bar gives me important advantages over most of my associates in the editorial calling. But I was not progressing mentally for the last two years of my practice, though I did in professional position.” Financially, the exchange was a fortunate one.