. Animal intelligence; experimental studies. Animal intelligence. 21 70. lOiaL. contiaued I I I 2 J 1 IliaL 1 I 1 2. !2inL I I FIG. ii. I Ik 1 I 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 Thorndike, Edward L. (Edward Lee), 1874-1949. New York, The Macmillan company

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Keywords: ., bookcentury1900, bookdecade1910, booksubjectanimalintelligence