Failing to get any sign of attention from Moses, Aaron moved up closer to his side and put his arms around him in the manner that is shown in the picture of him with Elisheba. During the days that followed, he sat hour after hour in the same attitude, and refused to allow any one except myself to touch his patient; but on my approach he always resigned him to me, while he watched with interest to see what I did for him. Among other things, I gave Moses twice a day a tabloid of quinine and iron. This was dissolved in a little water and given to him in a small tin cup kept for the purpose. When not in use, the cup was hung upon a tall post. Aaron soon learned to know the use of it, and whenever I went to Moses, Aaron would climb up the post and bring me the cup to administer the medicine. It is not to be inferred that he knew anything about the nature or effect of the medicine, but he knew the use, and the only use, to which that cup was put. Aaron displayed a marked interest during the act of administering the dose, and seemed to realize that it was intended for the good of the patient. He would sit close up to one side of the sick one and watch every movement of his face, as if to see what effect was being produced, while the changing expressions of his own visage plainly showed that he was not indifferent to the actions of the patient. While I was present with the sick one, Aaron appeared to feel a certain sense of relief from the care of him, and frequently went climbing about as if to rest and recreate himself by a change of routine. Whenever I took Moses for a walk, or sat with him on my lap, his little nurse was perfectly content; but the instant they were left alone, Aaron would again fold him in his arms, as if he felt it a duty to do so. It was only natural that Moses, in such a state of health, should be cross and peevish at times, as human beings in a like condition are; but I never once saw Aaron resent anything Moses did, or display the least ill-temper towards him. On the contrary, his conduct was so patient and forbearing that it was hard to forego the belief that it was prompted by the same motives of kindness and sympathy that move the human heart to deeds of tenderness and mercy. At night, when they were put to rest, they lay cuddled up in each other’s arms, and in the morning they were always found in the same close embrace. But on the morning Moses died the conduct of Aaron was unlike anything I had observed before. When I approached their snug little house and drew aside the curtain, I found him sitting in one corner of the cage. His face wore a look of concern, as if he were aware that something awful had occurred. When I opened the door he neither moved nor uttered any sound. I do not know whether or not apes have any name for death, but they surely know what it is.