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Original caption: This is a view of the troops engaged in building a pontoon bridge across Port Royal River, at Beaufort, S. C., in March, 1862. Each boat, with a certain number of timbers, is carried on a large wagon, and when needed, is brought up to the water's edge, slipped off from the wheels into the river, anchored parallel with the current, and followed by others in a like manner; the timbers are soon laid, and the army has a serviceable bridge, light and strong.
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