ISAAC HILL, formerly Governor of New Hampshire, and Senator in Congress, died at Washington, March 22d, aged about 63. He was born at Charlestown, N. H., the son of a farmer, and at an early age learned the trade of a printer. He established the first Democratic paper at Concord. To his able conduct is in a great measure to be ascribed the ascendency which his party acquired in the State, about the year 1828. Though possessing few of the external qualifications for a popular leader, being feeble in person, and altogether destitute of oratorical power, his unrivaled tact and untiring industry gave him an uncontrolled influence in the State. He was chosen State Senator; and subsequently United States Senator, which office he held from 1831 to 1836, when he resigned, in consequence of having been elected Governor of New Hampshire. He filled the executive chair for two or three terms, and then retired to private life. In 1840 he was appointed Sub-Treasurer at Boston; but the repeal of the Sub-Treasury Act the following year vacated his office. He then returned to New Hampshire; but his star had waned. He disagreed with his party on the subject of corporations and other radical questions, lost his political influence, and fell into comparative insignificance, as a politician, though he always adhered to his party. For a number of years he edited an agricultural paper of considerable merit. He suffered much from impaired health during the last years of his life; and died in moderate pecuniary circumstances.