Abstract
It is somewhat difficult to understand Mr. Henslow's remarks on the above subject in NATURE, vol. xix. p. 385. He tells us that if the dog that rang the bell to fetch the servant to let him out of a room in which he was shut up, had not been taught to ring the bell, “it would have been abstract reasoning, but it was only practical”. Further on he says that brutes never acquire “abstract reasoning”.
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RAE, J. [Letters to Editor]. Nature 19, 409 (1879). https://doi.org/10.1038/019409f0
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DOI: https://doi.org/10.1038/019409f0
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