As a member of the House he made many important arguments that were legal in name if not in fact. One related to the Act of the Legislature of 1843, by which the salaries of the judges were reduced, and another upon a bill for the amendment of the charter of Harvard College. On the latter question, which was in controversy for three years, his opponents were Judge Benjamin R. Curtis and Hon. Samuel Hoar. Mr. Boutwell originated the movement for a change in the college government, which was effected by a compromise in 1851. Chief Justice Lemuel Shaw, a member of the corporation, wrote an answer to his argument. This led to Mr. Boutwell's appointment in 1851 as a member of the Harvard College Board of Overseers, which position he filled until 1860. In January, 1851, he became Governor of Massachusetts by a fusion of the Democratic and Free-soil members of the Legislature, and in 1852 was re-elected by the same body. He served in that capacity until January, 1853, a period of two years, and discharged the duties of the office with ability, dignity, and honor. As a member of the Massachusetts Constitutional Convention of 1853, Mr. Boutwell had further and better opportunities to make the acquaintance and to observe the ways of the leading lawyers of the State. At the close of the Constitutional Convention of 1853, Governor Boutwell entered the law office of Joel Giles, who was engaged in practice under the patent laws, and who as a mechanic and lawyer was a well-equipped practitioner in Boston. As a counselor in patent cases Mr. Giles had few equals. It was then Mr. Boutwell's purpose to pursue the study and engage in the practice of the patent laws as a specialty, but in October, 1855, without any solicitation and indeed without the slightest knowledge on his part, he was chosen secretary of the Massachusetts Board of Education, of which he had been a member from 1853. With much uncertainty as to the wisdom of his action in accepting the place, he entered upon his duties and faithfully and efficiently discharged them until January 1, 1861, although he had tendered his resignation in 1859. His annual reports have always been regarded as models of preparation, and that of 1861--the twenty-fourth --contains a notable commentary on the school laws of the commonwealth. He continued as a member of the board until 1863.