Publisher's Synopsis
Excerpt from Use of Electricity in the Control of Sea Lampreys: Electromechanical Weirs and Traps and Electrical Barriers
Voltage gradients created in the water during each test conducted were measured, recorded, and correlated with effects on fish and lampreys. A specially designed probe and a vacuum tube voltmeter were used to obtain these measurements. A more detailed description of test instruments is included in a later section.
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