. Behavior monographs. Animal behavior. « i S 5$ o -2. o o o a s o 9 2 S 8 ? I S 8 GU These results do not present an exhaustive study of economy in retention. In learning, the question of economy has not yet been carried to its limits; and until that time. 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 Baltimore [etc. ], William & Wilkins Co. [etc. ]

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Keywords: ., bookc, bookcentury1900, bookdecade1910, booksubjectanimalbehavior