Mr. Mason was destined for the law, and commenced the study of that profession with Mr. Baldwin, a gentleman who has lived to perform important public and private duties, has served his country in Congress, and on the bench of the Supreme Court of Connecticut, and still lives to hear the account of the peaceful death of his distinguished pupil. After a year, he went to Vermont, in whose recently established tribunals he expected to find a new sphere for the gratification of ambition, and the employment of talents. He studied in the office of Stephen Rowe Bradley, afterwards a Senator in Congress; and was admitted to the bar, in Vermont and New Hampshire, in the year 1791.
He began his career in Westmoreland, a few miles below Walpole, at the age of twenty-three; but in 1794, three years afterwards, removed to Walpole, as being a larger village, where there was more society and more business. There was at that time on the Connecticut River a rather unusual number of gentlemen, distinguished for polite accomplishments and correct tastes in literature, and among them some well known to the public as respectable writers and authors. Among these were Mr. Benjamin West, Mr. Dennie, Mr. Royall Tyler, Mr. Jacobs, Mr. Samuel Hunt, Mr. J.W. Blake, Mr. Colman (who established, and for a long time edited, the “New York Evening Post"), and Mr. Olcott. In the association with these gentlemen, and those like them, Mr. Mason found an agreeable position, and cultivated tastes and habits of the highest character.