. L'évolution de l'intelligence animale . Intelligence animale ; la psychologie, comparatif. La vie mentale des singes et les singes 265 pourrait grimper sur elle le fort a été supprimé. Au début, Jimmy n'a pas essayer de déplacer la boîte de retour, mais a commencé à l'explorer et ouvrit le couvercle sur lequel il a grimpé et atteint la nourriture. La prochaine fois qu'il essaya de tirer la .table vers lui. Après un certain nombre d'manceuvers pour obtenir la nourriture qu'il avait appris à faire glisser la boîte ou une chaise vers la table et par cela signifie atteindre l'objet qu'il cherchait. Dans une autre expérience, un fort a été placé entre la fixation de la chaîne et d'un morceau

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. The evolution of animal intelligence . Animal intelligence; Psychology, Comparative. MENTAL LIFE OF APES AND MONKEYS 265 could climb upon it the box was removed. At first Jimmy did not try to move the box back, but began to explore it and opened the lid upon which he climbed and reached the food. The next time he .tried to pull the table toward him. After a number of different manceuvers to get the food he learned to drag the box or a chair toward the table and by this means reach the object he was seeking. In another experiment a box was placed between the fastening of his chain and a piece of potato which was just out of reach, but which could be reached if the chain did. Fig. 16.—"Jimmy" using a box in order to reacti food on the table. (After Hobbouse). not pass around the box. Jimmy soon came back to the box, moved it out of the way and got his potato. He re- peated the performance two more times without hesitation. When his chain was shortened by a heavy fender being placed over it he would come back and lift off the obstacle. He recognized, apparently, that the box and the fender pre- vented him from going as far as he otherwise might. Similar adjustment of means to ends was shown by the monkey kept by Miss Romanes, which she describes as follows: "His chain is fastened to the marble slab of a washhandstand, placed on the floor against the wall. It is too heavy for him to pull along by his chain without hurting himself, so when he desires to do any mischief which is. 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 work.. Holmes, Samuel J. (Samuel Jackson), 1868-1964. New York : Holt

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