Sounding machine with Negretti and Zambra deep-sea thermometer descending.In: Report on the Construction and Work in 1880 of United States FishCommission Steamer FISH-HAWK, by Lieutenant Zera Luther Tanner, U. S. N.United States Commission of Fish an
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Photographer: Archival Photograph by Mr. Steve Nicklas
Affiliation: NGS/RSD
Date: 1881
Subject: Fisheries Ships