The life of animals moves in a rather restricted circle, and there is not one of their acts that is not dictated by utility. Men, too, obey the rule of utility, but their imagination magnifies this field of the useful in a singular manner, and they find themselves obliged, for the purpose of mere existence, to open their memory to a considerable number of images to which animals are absolutely indifferent. We behold on a table, in a single glance, the plates, the food, the flowers, the glasses and all the rest; the dog sees only the food; the flowers that give us pleasure, the general arrangement that charms us, leave him utterly insensible to their attraction. There are also things to the sight of which we are ourselves insensible: those which are neither beautiful nor ugly, nor useful, nor harmful, neither good nor bad,-- everything that is not worth the trouble of being qualified, everything that is neutral to our senses as to our imagination. If, then, we are asked to give testimony regarding the existence of these objects, regarding the reality of those things that cause us neither pain nor pleasure, and which, therefore, we have neglected to retain in our memory, we should be greatly embarrassed. In general, when we are questioned we have a tendency to affirm that which we believe probable and to deny the case that seems to us improbable. Thus, in the case of the window, this window, opening upon an interior corridor, seemed to the students who were questioned quite improbable, since the thing was useless, even absurd. In the second place, and this is very important, we hold in our minds a series of types of fact to which invariably we relate the new events that we happen to witness. If, for example, we are in principle assured that every automobile accident is due to the drivers of these vehicles, it is with difficulty that we admit, even if we have seen it with our own eyes, that the accident was the fault of the victim. The case will be just the contrary with the chauffeur: to him, the victim is always in the wrong. But if, for us, the chauffeur is always wrong, our attitude is equally unreasonable. In either case, the images will be distorted and if we are questioned, we will reply with lies uttered in all good faith: "This is so because it ought to be so." M. Claparède even goes so far as to admit that the evidence of various individuals may be erroneous, even if they all agree. I am of his opinion, because it is quite normal that the same interest or the same absence of interest unconsciously guides witnesses of diverse origin and condition. All the ancient explorers of the Kerguelen Isles saw there only sterile and uninhabitable lands. Yet in recent days a colony composed of men from Havre and Norwegians has established itself there and finds the country rough, but healthful and well suited not only to fishing but also to pasturage.