. The Biological bulletin. Biology; Zoology; Biology; Marine Biology. 612 KENNETH R. H. READ IO/x. FIGURE 6. Photomicrograph of section stained for occult iron, taken with a Wratten No. 25 (red) filter in the optical system; the magnification is the same as for Figure 5. The color of the two dense granular masses was green; note the shadowy image of the nucleus at the left-hand side of the picture (arrow). of approximately the same size and structure as the yellow-brown masses seen in the unstained cryostat section; Figure 6 shows a photomicrograph taken with a Wratten No. 25 (red) filter in t
. The Biological bulletin. Biology; Zoology; Biology; Marine Biology. 612 KENNETH R. H. READ IO/x. FIGURE 6. Photomicrograph of section stained for occult iron, taken with a Wratten No. 25 (red) filter in the optical system; the magnification is the same as for Figure 5. The color of the two dense granular masses was green; note the shadowy image of the nucleus at the left-hand side of the picture (arrow). of approximately the same size and structure as the yellow-brown masses seen in the unstained cryostat section; Figure 6 shows a photomicrograph taken with a Wratten No. 25 (red) filter in the optical system at the same magnification as the photomicrograph of the unstained cryostat section in Figure 5. The green-staining masses were confined to the interior cells of the gill and were not associated with the ciliated cells of the exterior surface of the ctenidium; this distribution is apparent from examination of Figures 7a, b and c, which are photomicrographs of the same section of the ctenidium taken without any filter, with a Wratten No. 58 (green) and with a Wratten No. 25 (red) filter in the optical system, respectively. DISCUSSION Absorption spectra The behavior of the Phacoides pcctinatus preparation, with respect to its ab- sorption spectra under various conditions, is very strong evidence in favor of its containing hemoglobin. Unfortunately, the absorption spectra of other lamellibranch hemoglobins appear to be known only for Area inflata, Area subcrenata and Th'cla 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 Marine Biological Laboratory (Woods Hole, Mass. ); Marine Biological Laboratory (Woods Hole, Mass. ). Annual report 1907/08-1952; Lillie, Frank Rattray, 1870-1947; Moore, Carl Richard, 1892-; Redfield, Alfred Clarence, 1890-1983. Woods Hole, Mass. : Marine Biologica
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