. Bulletin of the Museum of Comparative Zoology at Harvard College. Zoology; Zoology. 10 THREE CRUISES OF THE " BLAKE. As soon as the sinker strikes bottom, which is made apparent by the stopping of the reel, read the register and the odometer, and at the same time ship the crank on the axles of the reel, and, to insure the detachment of the sinker, pay out a few turns. 7!^ Fig. 6. — Sigsbee's Detacher, and Belknap's Sounding Cylinder. (Sigsbee.) Fig. 7. — Section of Fig. 6. (Sigsbee.) Fig. 8. — Belknap's Cylin- der detached from Shot. (Sigsbee.) few its of the wire by hand, until it feel
. Bulletin of the Museum of Comparative Zoology at Harvard College. Zoology; Zoology. 10 THREE CRUISES OF THE " BLAKE. As soon as the sinker strikes bottom, which is made apparent by the stopping of the reel, read the register and the odometer, and at the same time ship the crank on the axles of the reel, and, to insure the detachment of the sinker, pay out a few turns. 7!^ Fig. 6. — Sigsbee's Detacher, and Belknap's Sounding Cylinder. (Sigsbee.) Fig. 7. — Section of Fig. 6. (Sigsbee.) Fig. 8. — Belknap's Cylin- der detached from Shot. (Sigsbee.) few its of the wire by hand, until it feels slack. Then reel in a turns, and the distance that the cross-head travels down o-uides will indicate if the sinker has been detached. Gener- ally, with a good form of detacher, it drops off on striking bot- tom. In place of the Stellwagen cup, rod, and detacher, used in Fig. 4, we may use for deeper soundings the sounding-rod, composed of Sigsbee's detacher in connection with a modification of Commander Belknap's cylinder No. 2. During the descent the cone / is kept up by the shot, as shown in Figs. 6 and 7,. Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the original Harvard University. Museum of Comparative Zoology. Cambridge, Mass. : The Museum
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Keywords: ., bookauthorha, bookcentury1800, bookdecade1860, booksubjectzoology
