ARNOLD, Samuel Greene, historian, born in Providence, Rhode Island, 12 April 1821; died there, 12 February 1880. He was graduated at Brown in 1841, spent two years in a Providence counting-house, and visited Europe° On his return he studied law, being graduated at Harvard law school in 1845, and was admitted to the Rhode Island bar; but before practicing he again traveled extensively in Europe, the east, and South America. In 1852 he was chosen lieutenant governor of his state, being the only man elected on the Whig ticket, and he again occupied that office in 1861 and 1862. On the breaking out of the civil war he was for a few weeks in command of a battery of artillery and aide to Governor Sprague. From 1 December 1862, to 3 March 1863, he served in the United States senate, having been chosen to fill out the term of J. F. Simmons, resigned. He published a valuable " History of the State of Rhode Island and Providence Plantations " (2 vols., New York, 1860). He was the author of "The Spirit of Rhode Island History," a discourse delivered on 17 January 1853, before the Rhode Island historical society, of which he was for some time the president, an address before the American institute in New York in October 1850, and numerous other addresses, and articles in periodicals.