. Contributions. Biology. Fig. 1.—(1, Outer libro-muscular layer, b. Blood .sinus, c, Middle glandular layer, x f _- Fig. 2.—Middle glandular layer, x 1000. PHOTOMICROGRAPHS SHOWING STRUCTURE OF THE RECTAL GLAND (PROCESSUS DIGITIFORMIS) IN THE SMOOTH 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 Brown University. Biological Laboratory. Providence, R. I

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Keywords: ., bookcentury1800, bookdecade1890, bookpublishe, booksubjectbiology