Equipment of McDonald automatic tidal boxes, for hatching cod, Boothbay Harbor, Me. Shows boxes lifted out of troughs and bottom upward on farther tables. The bottom is of scrim, and by means of cleats is held 1 1/2 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 menas of which the water is alternately drawn down and replenished. Standpipe with siphon cap is shown near troughs; waste trough below
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| Category | Hatcheries
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| Caption | Equipment of McDonald automatic tidal boxes, for hatching cod, Boothbay Harbor, Me. Shows boxes lifted out of troughs and bottom upward on farther tables. The bottom is of scrim, and by means of cleats is held 1 1/2 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 menas of which the water is alternately drawn down and replenished. Standpipe with siphon cap is shown near troughs; waste trough below
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| Image Date | 1910.00 |
| Subject | Fish hatcheries--Equipment and supplies
Boothbay Harbor (Maine)
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| Geographic Subject | United States--Maine--Boothbay Harbor
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| Image Source Author | Titcomb, John W. |
| Image Source Title | Fish-Cultural Practices in the United States Bureau of Fisheries |
| Pub. Info. | Washington, DC : Government Printing Office, 1910 |
| Image Source Series | Bulletin of the Bureau of Fisheries, vol. 28, 1908, Part 2 |
| Page No./Plate No. | Plate LXXXVIII-23 |
| Digital collection | Freshwater and Marine Image Bank |
| Repository | Most materials are located in the University of Washington Libraries. Images were scanned by staff of the UW Fisheries-Oceanography Library |
| Copyright | Materials in the Freshwater and Marine Image Bank are in the public domain. No copyright permissions are needed. Acknowledgement of the Freshwater and Marine Image Bank as a source for borrowed images is requested. |
| Ordering Information | The University of Washington Libraries does not provide reproductions of this image. This record contains a citation for this image. If you want to use the scanned image, acknowledgement of the Freshwater and Marine Image Bank as a source for borrowed images is requested. |
| Type | Image |
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