Animal intelligenceNote 40 — Chapter V · The Mental Life of the Monkeys; an Experimental Study[22] (continued 2)Reading editionDid by pulling at the door till the bar was worked around.◇Copy noteReturn to CHAPTER V The Mental Life of the Monkeys; an Experimental Study[22] (continued 2)Return to CHAPTER V The Mental Life of the Monkeys; an Experimental Study[22] (continued 2)