Issue 21 and Volume 33.

A GIANT FLUME. After two years spent in construction, the greatest flume in the world has recently been opened at Madera. Cal., in the heart of the redwood forests, about 185 miles from San Francisco. Practically the thing is nothing but a V-shaped wooden trough, the remarkable fact being that it is fifty-three miles and one-eighth of a mile long, or, including the numerous “feeders,” which branch off at intervals, seventy-one miles. The trough is of wood, double twoinch planking, and is forty-six inches across the top. This trough is carried on scaffolding over gorges and valleys, and passes through rock cuts in the mountains, keeping as closely as possible to a regular. even descent, like that of an aqueduct. Water from the mountain streams is collected at the upper end of the flume and furnishes the steady current on which logs two feet in diameter are to be carried…

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