. Contributions to the study of the behavior of lower organisms. Physiology, Comparative; Infusoria; Amoeba; Irritability. . 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 Jennings, H. S. (Herbert Spencer), 1868-1947. Washington : Carnegie Institution of Washington

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Keywords: ., bookcentury1900, bookdecade1900, booksubjectphysiol, bookyear1904