Keywords: FMIB 33253 Oyster; Diagram to show the double-w-like arrangement of the eight leaves forming the four gills;(1);; Very highly magnified.jpeg check categories 14 August 2015 3 Oyster; Diagram to show the double-w-like arrangement of the eight leaves forming the four gills ; 1 ;; Very highly magnified view of a cross section of two of the gill ridges 2 ;; Highly magnified cross-section of part of a gill 3 Subject Oysters Tag Shellfish 1891 Cite book Oyster a Popular Summary of a Scientific Study Brooks William Keith Baltimore MD The Johns Hopkins Press 1891 Plate III Creator William Keith Brooks PD-UWASH-FMIB Institution University of Washington FMIB-source accession number 33253 Images from the Freshwater and Marine Image Bank to check Oysters William Keith Brooks |