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"A deep-sea dredge. The iron lip of the sack scrapes shells mud, etc., into it, and small animals are caught by the "tangles."

Deep Sea Dredge

"A deep-sea dredge. The iron lip of the sack scrapes shells mud, etc., into it, and small animals are…

"To carry the sounding wire to great depths a heavy weight is need. It can not be drawn up again, and is therefore so arranged as to disconnect itself at the bottom." -Gilbert, 1910

Sounding Wire Weight

"To carry the sounding wire to great depths a heavy weight is need. It can not be drawn up again, and…