. Bulletin of the Bureau of Fisheries. Fisheries; Fish culture. Fig. 2.—Spawning pond. (Plan.) Space between the boards of about i}4 inches. Through these openings the impurities will sink down into a sort of funnel-shaped cellars, provided with Zrr^/ Fig. 3.—Same as figure 2, showing section A-B. 4-inch drainpipes in their lowest part. (Fig. 2 and 3.) These drains are opened about a quarter of an hour every day. In spite of these precau- tions, however, the bottom water will, after a time, be contaminated to a. Please note that these images are extracted from scanned page images that may
. Bulletin of the Bureau of Fisheries. Fisheries; Fish culture. Fig. 2.—Spawning pond. (Plan.) Space between the boards of about i}4 inches. Through these openings the impurities will sink down into a sort of funnel-shaped cellars, provided with Zrr^/ Fig. 3.—Same as figure 2, showing section A-B. 4-inch drainpipes in their lowest part. (Fig. 2 and 3.) These drains are opened about a quarter of an hour every day. In spite of these precau- tions, however, the bottom water will, after a time, be contaminated to a. 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
