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Excerpt from A Fishway That Shad AscendAt the present only the lower 27 miles of the Merrimack River, heavily polluted with industrial wastes and sewage, are available as spawning areas for shad.About the PublisherForgotten Books publishes hundreds of thousands of rare and classic books. Find more at www.forgottenbooks.comThis book is a reproduction of an important historical work. Forgotten Books uses state-of-the-art technology to digitally ...

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Excerpt from Fishery Research at the Fisheries-Engineering Research LaboratoryFigure 1, - fisheries-engineering Research Laboratory adjoining Washington-shore fishway at Bonne ville Dam. The dam is on the Columbia River 140 river-miles from the sea.Figure 3. - Entrance to the fish collection pool. Fish swim into the laboratory through a narrowing funnel that prevents them from leaving.About the PublisherForgotten Books publishes hundreds of th...

Excerpt from A Fishway That Shad AscendAt the present only the lower 27 miles of the Merrimack River, heavily polluted with industrial wastes and sewage, are available as spawning areas for shad.About the PublisherForgotten Books publishes hundreds of thousands of rare and classic books. Find more at www.forgottenbooks.comThis book is a reproduction of an important historical work. Forgotten Books uses state-of-the-art technology to digitally ...