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Scientific American, Vol. 52, No. 9 (1885) (1885)

leaf 8

An illustration from Scientific American, Vol. 52, No. 9 (1885), 1885, leaf 8
its own, consisting of a num- above the obstacles to be overcome by the fishway an burning or decay (e7emacausis) must take place. To ber of cross dams, whose level is 0'4 meter lower than opportunity to participate in the salmon fishery. This produce this chemical action, heat is necessary—at… … less than 27°2 meters (89 feet), and When applied from a pile of saw- the steep, wildcliffs that surround dust, or the turning under of a it on all sides leave but little space for building a fish- growth of vegetable matter, the result is the same. bottom 0°89 meter square. The principal dam at…

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