. American fish-culture [microform] : embracing all the details of artificial breeding and rearing of trout, the culture of salmon, shad and other fishes. Fish culture; Fishes; Oyster-culture; Pisciculture; Poissons; Ostréiculture. Fias. 1, 2, 7.—Orocn's patent hatching box soen from the Bide, end and bottom. Scale, t-20th. a, side floats 3 4" long; 2" by 3" square, set with screws, b, bottom croHS bar, bevellpd, to throw the ciirront upward, c, wire-net bottooi 14 wires to an inch, rf, trap in hlml end for escape of young fish, covered by wire-net, 8 to an Inch, and with a cove
. American fish-culture [microform] : embracing all the details of artificial breeding and rearing of trout, the culture of salmon, shad and other fishes. Fish culture; Fishes; Oyster-culture; Pisciculture; Poissons; Ostréiculture. Fias. 1, 2, 7.—Orocn's patent hatching box soen from the Bide, end and bottom. Scale, t-20th. a, side floats 3 4" long; 2" by 3" square, set with screws, b, bottom croHS bar, bevellpd, to throw the ciirront upward, c, wire-net bottooi 14 wires to an inch, rf, trap in hlml end for escape of young fish, covered by wire-net, 8 to an Inch, and with a covering slide, e, anchoring cord. /, water-line. G, spawn. and heaped up, whereby many were spoiled for lack of fresh water and motion. The best that this box would do, was 90 per cent., while often it would hatch only 70 or 80 per cent. "The spawn-box he at last hit on is as simple as in- genious. It is merely a box with a wire-gauze bottom, and Steadied in the water by two float-bars, screwed to its sides. These float-bars are attached, not parallel to the top line of the box, but at an angle to it, which makes the box float with one end tilted up, and the current striking the gauze bottom at an angle, is deflected upwards, and makes. 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 Norris, Thaddeus, 1811-1877. Philadelphia : Porter & Coates; London : S. Low
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License: Licensed
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Keywords: ., bookcentury1800, bookdecade1860, booksubjectfishes, bookyear1868
