. Bulletin of the Bureau of Fisheries. Fisheries; Fish culture. 1048 BULLETIN OF THE BUREAU OF FISHERIES. c= «= t: -PV -:) c- -3 J___3l /7cr/7 J/iT^ i^e*/): Fig. II.—Atkins. Under system i may be reckoned also the fishways for young eels, which consist merely of an inclined pipe from 4 to 6 inches in diameter, or a narrow flume, which is filled with loose gravel and pebbles, with fascines of brush and saplings, or with a mixture of both, through which the young eels can readily pass. II. THE POOL AND FALL, OR STEP SYSTEM. Figures 12 to 14 show the current carried down an incline broken by step
. Bulletin of the Bureau of Fisheries. Fisheries; Fish culture. 1048 BULLETIN OF THE BUREAU OF FISHERIES. c= «= t: -PV -:) c- -3 J___3l /7cr/7 J/iT^ i^e*/): Fig. II.—Atkins. Under system i may be reckoned also the fishways for young eels, which consist merely of an inclined pipe from 4 to 6 inches in diameter, or a narrow flume, which is filled with loose gravel and pebbles, with fascines of brush and saplings, or with a mixture of both, through which the young eels can readily pass. II. THE POOL AND FALL, OR STEP SYSTEM. Figures 12 to 14 show the current carried down an incline broken by steps into a number of pools of relatively still water. VVV) rvA/- «^-v —J3. \AA^ ^/a^. A/\A^. SecZ-Jorr/frB. Fig. 12.—Richardson. 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 United States. Bureau of Fisheries. Washington, D. C. : Govt. Print. Off.
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Keywords: ., bookcentury1900, bookdecade1900, booksubjectfisheries, bookyear19
