. Devices for use in fish hatcheries and aquaria. Fish culture; Aquariums. [from old catalog]. DEVICES FOR USE IN FISH HATCHERIES AND AQUARIA. 1035 To a board, i meter long and meter wide, edged with a strip meter high to keep the pulp of the spleen from falling over the sides, is affixed at each end a transverse support to raise it above the surface of the table on which the scraper is used. One support should be sufficiently high to permit a small recep- tacle to be placed somewhat under the board, at a height of meter approxi- mately, while for the other support a height of 0
. Devices for use in fish hatcheries and aquaria. Fish culture; Aquariums. [from old catalog]. DEVICES FOR USE IN FISH HATCHERIES AND AQUARIA. 1035 To a board, i meter long and meter wide, edged with a strip meter high to keep the pulp of the spleen from falling over the sides, is affixed at each end a transverse support to raise it above the surface of the table on which the scraper is used. One support should be sufficiently high to permit a small recep- tacle to be placed somewhat under the board, at a height of meter approxi- mately, while for the other support a height of meter would be sufficient. The board will thus be inclined. At the lower end a narrow board is attached fiat by means of a hinge at the farther side. This small board is to meter wide, of the same thickness as the big board, and in it are fixed 10 to 12 sharp points meter long, spaced meter apart. This board _Boarcf C/smp swung back, the spleen is placed flat on the larger board, some or meter of it falling over the end. The small board is then swung forward and its points, piercing the spleen, will keep the latter in place during the scrap- ing. A small hook at the end holds the small board in position to keep the spleen from slipping. The thin skin around the spleen is taken off with a knife and the spleen is cut longitudinally sev- eral times. The scraper is manipulated in the manner of a plane. The spleen should be turned end for end, if need be, to scrape the part which had been held under the toothed board. Cfamp. -Scraper for preparing fish food. This implement may seem an odd device, but it is remarkable how rapidly the spleen pulp is extracted. Two to three minutes are sufficient for the opera- tion, with a spleen weighing kilogram. It should be added that this pulp does not contain any remnants of spleen cells, as might be supposed. If the spleen is frozen in winter and it is not feared that the nutritive quali- ties of the raw
Size: 1499px × 1666px
Photo credit: © Paul Fearn / Alamy / Afripics
License: Licensed
Model Released: No
Keywords: ., bookcentury1900, bookdecade1910, bookpublisherwashi, bookyear1910
