Page:Popular Science Monthly Volume 90.djvu/35

This page needs to be proofread.

Scouring As Employed on the Water

���To avoid making passengers change cars in order to cross Suisun Bay, Oakland, Cal., a railway company operating between Oak- land and Sacramento transports its trains, loaded with passengers, across the bay on a gasoline-engine driven ferry (illustration on the left continued from preceding page). The car ferry is known as the Ramon. It has carrying capacity for six loaded passenger trains or eight freight trains

��Below: A continuation of the picture of a floating pipe-line used by the engineer corps for dredging channels and harbors. The dredge draws the sediment from the bottom, sucks it into the pipe-line and then pumps it through the line to the point of discharge which is miles out at sea. The average length of the pipe-lines is twelve hundred feet. The pontoons are designed to offer a minimum resistance to waves and tides


�� �