BROOKS, Thomas Benton, engineer, born in Monroe, Orange County, New York, 15 June, 1836. He was graduated at the engineering department of Union in 1858. During the civil war he was captain in the 1st New York volunteer engineers, afterward becoming major and aide on the general staff of the army. As such he served under General Gillmore in the reduction of Fort Pulaski and Fort Wagner and before Charleston. His reports are given in full in General Gillmore's "Siege and Reduction of Fort Pulaski " (New York, 1862), and in his "Operations against the Defenses of Charleston Harbor" (1863). At the time of his resignation he held the brevet rank of colonel. From 1869 till 1879 he was assistant geologist in charge of the surveys of the Lake Superior iron regions. In this connection he was associated with Raphael Pumpelly, and prepared "Geological Survey of Michigan " (vols. i. and ii., New York, 1873., also " Geology of Wisconsin " (part of vol. iii., Madison, 1879). His health having failed, in 1879 he turned his attention to farming, and now resides at New-burg, New York