Keywords: FMIB 34574 Nest of Trays in Williamson's Double Riffle Hatching Box.jpeg check categories 17 September 2015 3 Nest of Trays in Williamson's Double Riffle Hatching Box Subject Fish hatcheries--Equipment and supplies Williamson's Double Riffle Hatching-Box Tag Hatcheries 1874 Cite book Report of the Commissioner for 1872 and 1873 Report of the Commissioner United States Commission of Fish and Fisheries 1872-1873 United States Commission of Fish and Fisheries Washington DC Government Printing Office 1874 Plate XVI-2 United States Commission of Fish and Fisheries PD-UWASH-FMIB Institution University of Washington FMIB-source accession number 34574 Images from the Freshwater and Marine Image Bank to check United States Commission of Fish and Fisheries Fishing equipment Fish hatcheries |