. Bulletin of the Bureau of Fisheries. Fisheries; Fish culture. BuL. U. S. B. F., 1908. PI.ATE LXXXVIII.. I'lG, 23.—Equipment of McDuiiakl automatic tidal boxes, for hatchiug cod, Boothbay Harbor, ]Ie. Shows buxes lifted out of troughs and bottom upward on farther tables. The bottom is of scrim, and by means of cleats is held 1% inches above the bottom of the trough at the center. By an arrangement of partitions at the head of the trough the eggs receive the supply of water through the scrim bottoms of the boxes, also through a small hole in one end of the box. The distinctive feature of the
![. Bulletin of the Bureau of Fisheries. Fisheries; Fish culture. BuL. U. S. B. F., 1908. PI.ATE LXXXVIII.. I'lG, 23.—Equipment of McDuiiakl automatic tidal boxes, for hatchiug cod, Boothbay Harbor, ]Ie. Shows buxes lifted out of troughs and bottom upward on farther tables. The bottom is of scrim, and by means of cleats is held 1% inches above the bottom of the trough at the center. By an arrangement of partitions at the head of the trough the eggs receive the supply of water through the scrim bottoms of the boxes, also through a small hole in one end of the box. The distinctive feature of the Stock Photo](https://c8.alamy.com/comp/RGH562/bulletin-of-the-bureau-of-fisheries-fisheries-fish-culture-bul-u-s-b-f-1908-piate-lxxxviii-ilg-23equipment-of-mcduiiakl-automatic-tidal-boxes-for-hatchiug-cod-boothbay-harbor-ie-shows-buxes-lifted-out-of-troughs-and-bottom-upward-on-farther-tables-the-bottom-is-of-scrim-and-by-means-of-cleats-is-held-1-inches-above-the-bottom-of-the-trough-at-the-center-by-an-arrangement-of-partitions-at-the-head-of-the-trough-the-eggs-receive-the-supply-of-water-through-the-scrim-bottoms-of-the-boxes-also-through-a-small-hole-in-one-end-of-the-box-the-distinctive-feature-of-the-RGH562.jpg)
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. Bulletin of the Bureau of Fisheries. Fisheries; Fish culture. BuL. U. S. B. F., 1908. PI.ATE LXXXVIII.. I'lG, 23.—Equipment of McDuiiakl automatic tidal boxes, for hatchiug cod, Boothbay Harbor, ]Ie. Shows buxes lifted out of troughs and bottom upward on farther tables. The bottom is of scrim, and by means of cleats is held 1% inches above the bottom of the trough at the center. By an arrangement of partitions at the head of the trough the eggs receive the supply of water through the scrim bottoms of the boxes, also through a small hole in one end of the box. The distinctive feature of the apparatus, whence it is called "tidal." is the automatic siphon outflow, by means of which the water is alternately drawn down and replenished. Standpipe witli siphon cap is shown in near troughs; waste trough below.. 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 work.. United States. Bureau of Fisheries. Washington, D. C. : Govt. Print. Off.