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Deep-sea Sounding and Dredging
"[Report contains] twenty-five heliotype plates showing the ship, Sigsbee's sounding machines and various deck photographs of how to place it in operation...[This is] an example of a lavishly illustrated report. The industrial photography in this book is of the highest quality and is striking in its directness."--Hanson Collection catalog, p. 72.
Deep-sea Sounding
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Deep Sea Sounding
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Deep-sea Sounding
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Deep-Sea Sounding and Dredging
Excerpt from Deep-Sea Sounding and Dredging: A Description and Discussion of the Methods and Appliances Used on Board the Coast and Geodetic Survey Steamer, "Blake" We were one of the first, after Sir William Thomson, and Capt. George E. Belknap, U. S. N to use piano-forte wire for sounding purposes, and we probably continued its use for a longer time than any other organization. The Blake is the only vessel that has ever been fitted out with wire rope (the suggestion of Prof. Alexander Agassiz) for deep-sea dredging and trawling. But little has been published concerning the use of wire for sound ing; and of wire rope for dredging, nothing, in fact, excepting in a gen eral account of the Bla...
