. Chimpanzee intelligence and its vocal expressions. Chimpanzees; Animal intelligence; Sound production by animals. - - ooh - - - ooh - - And, as he approached her from below: 259 ooh - ooh Then meditatively: ooh ooh ~i~~w-w 260 ooh ooh As he jostled her roughly; ooh - ooh - ooh - ah oh ah, - 261 i u ooh. 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 Yerkes, Robert Mearns, 1876-1956; Learned, Blanche W. Baltimore, The Wil

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. Chimpanzee intelligence and its vocal expressions. Chimpanzees; Animal intelligence; Sound production by animals. - - ooh - - - ooh - - And, as he approached her from below: 259 ooh - ooh Then meditatively: ooh ooh ~i~~w-w 260 ooh ooh As he jostled her roughly; ooh - ooh - ooh - ah oh ah, - 261 i u ooh. 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 Yerkes, Robert Mearns, 1876-1956; Learned, Blanche W. Baltimore, The Williams & Wilkins Company

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Keywords: ., bookcentury1900, bookdecade1920, booksubjectanimalintelligence