Foster, Edwin W · Boston : Ginn and Company · leaf 63
Fig. 65. A Skidway of Adirondack Spruce that hundreds of thousands of logs are stopped in theircourse, forming an immense dam which the lumbermencall a log jmn. To break up this jam very often requires much laborand gre:it dating on the part of the drivers, who wear … 54
Woodwork · Trees
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