On the authority of a zoologist "whose scrupulous accuracy was known to many persons," Darwin relates the following story:--"At the Cape of Good Hope an officer had often plagued a certain baboon, and the animal, seeing him approaching one Sunday for parade, poured water into a hole and hastily made some thick mud, which he skilfully dashed over the officer as he passed by, to the amusement of many bystanders. For long afterwards the baboon rejoiced and triumphed whenever he saw his victim."[80] Prof. Romanes considers this to be a good instance of "what may be called brooding resentment deliberately preparing a satisfactory revenge."[81] This, I think, is to put into the statement somewhat more than it really contains; but at all events it records a case of revenge, in the sense in which Dr. Steinmetz uses the word. The same may be said of other instances mentioned by so accurate observers as Brehm and Rengger in their descriptions of African and American monkeys, and of various examples of resentment in elephants and even in camels.[82] According to Palgrave, the camel possesses the passion of revenge, and in carrying it out "shows an unexpected degree of far-thoughted malice, united meanwhile with all the cold stupidity of his usual character." The following instance, which occurred in a small Arabian town, deserves to be quoted, since it seems to have escaped the notice of the students of animal psychology. "A lad of about fourteen had conducted a large camel, laden with wood, from that very village to another at half an hour's distance or so. As the {38} animal loitered or turned out of the way, its conductor struck it repeatedly, and harder than it seems to have thought he had a right to do. But not finding the occasion favourable for taking immediate quits, it 'bode its time'; nor was that time long in coming. A few days later the same lad had to re-conduct the beast, but unladen, to his own village. When they were about half way on the road, and at some distance from any habitation, the camel suddenly stopped, looked deliberately round in every direction, to assure itself that no one was within sight, and, finding the road far and near clear of passers-by, made a step forward, seized the unlucky boy's head in its monstrous mouth, and lifting him up in the air flung him down again on the earth with the upper part of his skull completely torn off, and his brains scattered on the ground."[83] We are also told that elephants, though very sensitive to insults, are never provoked, even under the most painful or distracting circumstances, to hurt those from whom they have received no harm.[84] Sometimes animals show a remarkable degree of discrimination in finding out the proper object for their resentment. It is hardly surprising to read that a baboon, which was molested in its cage with a stick, tried to seize, not the stick, but the hand of its tormentor.[85] More interesting is the