Military officer; born in
Salem, Mass., Dec. 17, 1821; studied civil engineering, and was employed by the government in conducting explorations across the continent.
He made two surveys to determine the practicability of a railroad route to the
Pacific.
In the last, he alone of all the party returned alive.
He surveyed and constructed a great overland wagon-road, which had been recently completed when the
Civil War broke out, when he was employed on secret missions to the
South.
On the staff of
General McClellan he was very active in the vicinity of the upper Potomac.
In a skirmish at Edwards's Ferry, after the disaster at
Ball's Bluff (q. v.,) he was wounded in the leg. In January, 1862, he was on active duty, and repulsed a large Confederate force at
Hancock, Va. Before his wound was healed he made a brilliant dash, Feb. 14, 1862, on Blooming Gap, for which the
Secretary of War gave him special thanks.
His health was evidently giving away, and he applied for temporary relief from military duty; but, impatient, he prepared to make another attack on the
Confederates, when he suddenly died from congestion of the brain, in
Paw Paw, Va., March 2, 1862.