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 depthsofoceange00murr Year: 1912 THE SHIP AND ITS EQUIPMENT 47 fish almost as well as the trawl itself. The cylindrical fore part is largely responsible for this, as it retains within its walls the animals that do not pass immediately into the after part, which, owing to its great length, lets the water filter easily through. One great advantage of these to
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 depthsofoceange00murr Year: 1912 THE SHIP AND ITS EQUIPMENT 47 fish almost as well as the trawl itself. The cylindrical fore part is largely responsible for this, as it retains within its walls the animals that do not pass immediately into the after part, which, owing to its great length, lets the water filter easily through. One great advantage of these tow-nets is that they can be lowered very rapidly when used as vertical nets. They then Fig. 30.—Large Vertical Closing Net. assume the shape depicted on the left in Fig. 29. The net in the foremost portion of the cylinder is the only part that offers any resistance, and it too is wide meshed, so that the water easily passes through it; the rest descends like a thick rope. They can also be used as closing nets, and we have actually employed in that capacity nets Jr, §, and 1 metre in diameter at the entrance. We further constructed two large closing nets, 3 metres in
Size: 1399px × 1429px
Photo credit: © Actep Burstov / Alamy / Afripics
License: Licensed
Model Released: No
Keywords: 1900, 1910, 1912, archive, book, bookauthor, bookcentury, bookdecade, bookpublisher, booksubject, bookyear, drawing, historical, history, illustration, image, london_macmillan, murray_john_sir_1841_1914, oceanography, page, picture, print, reference, vintage
