Archive image from page 78 of The depths of the ocean. The depths of the ocean : a general account of the modern science of oceanography based largely on the scientific researches of the Norwegian steamer Michael Sars in the North Atlantic depthsofoceangen00murr Year: 1912 Fig. 33.—Brass Knob for Tow-Nets. fastened the tow-net to a brass ring, which could be threaded on above the knob (Fig. 34), The appliance is thus kept from sliding down the wire, and is free to move in any direction (see also Fig. 32). This method of working enables one to operate as many appliances as E Fig. 34.—Brass

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Archive image from page 78 of The depths of the ocean. The depths of the ocean : a general account of the modern science of oceanography based largely on the scientific researches of the Norwegian steamer Michael Sars in the North Atlantic depthsofoceangen00murr Year: 1912 Fig. 33.—Brass Knob for Tow-Nets. fastened the tow-net to a brass ring, which could be threaded on above the knob (Fig. 34), The appliance is thus kept from sliding down the wire, and is free to move in any direction (see also Fig. 32). This method of working enables one to operate as many appliances as E Fig. 34.—Brass Ring for Tow-Nets.

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Photo credit: © Actep Burstov / Alamy / Afripics
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