File:A manual of fish-culture, based on the methods of the United States commission of fish and fisheries (1897) (14577640320).jpg

Identifier: manualoffishcult00unit (find matches)
Title: A manual of fish-culture, based on the methods of the United States commission of fish and fisheries
Year: 1897 (1890s)
Authors: United States. Bureau of Fisheries Brice, John J. (from old catalog) Moore, H. F. (Henry Frank), 1867-1948 Chamberlain, F. M. (Frederick M.)
Subjects: Fish culture Oyster culture Frogs
Publisher: Washington, Govt. print. off.
Contributing Library: The Library of Congress
Digitizing Sponsor: The Library of Congress

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Text Appearing Before Image:
Diagram of Tidal Cod Hatchmg-Box. A-B Points where cross-section is taken.a, siphon. c, partitions forming upper pockets. d, partition forming space at upper end of compartment. e, partition forming space at lower end of compartment./, glass gate.g, slot between adjoining compartments. ing on the size of the hatching-room, the arrangement of the hatching-tables, or other conditions. The Gloucester hatchery has 8 tables of9 boxes each, and Woods Hole 14 tables of 12 each. At Gloucester25,000,000 eggs can be hatched at one time, and at Woods Hole65,000,000. For a wooden framework to accommodate 9 boxes suchas are used at Gloucester the outside dimensions are: Length, 10 Report U. S. F. C. 1897. (To face page 202.) Plate 56.
Text Appearing After Image:
Mcdonald tidal boxes, used for hatching cod and flatfish. MANUAL OF FISH-CULTURE. 203 feet; width, 3 feet 8 inches; depth, 11 inches. The table or trough isconstructed of 2-inch lumber and raised to a convenient height byshort, stout legs. The table is divided into 9 water tight compart-ments by means of crosswise partitions of 1^-inch plank. At Woods Hole the dimensions of the troughs containing 12 boxesare as follows: Length over all, 13 feet; width, 2 feet 7 inches; depth,12 inches. The plank is 1£ inches thick. The bottom of the trough is2£ feet above the floor. The compartments are separated by 1^-inchpartitions and are 22 inches long, 12 inches wide, and lOf or 11inches deep. Two inches from each end of each compartment there is a 1-inchwood partition. The partition d at the supply or upper end of thecompartment extends with its middle portion to the bottom of thetrough, while the two sides extend only to within 1£ inches of the bot-tom. The partition e, at the discharge or l

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