Children, as may be seen in this story, are particularly interested in the movements of things. Movement is the clearest and most impressive manifestation of life. All apparently spontaneous or self-caused movements are accordingly taken by children, as by primitive man, to be the sign of life, the outcome of something analogous to their own impulses. Hence the movements of falling leaves, of running water, of feathers and the like are specially suggestive of life. Wind owes much of its vitality, as seen in the facile personification of it by the poet, to its apparently uncaused movements. Some children in the Infant Department of a London Board School were asked what things in the room were alive, and they promptly replied the smoke and the fire. Big things moving by an internal mechanism of which the child knows nothing, more especially engines, are of course endowed with life. A little girl of thirteen months offered a biscuit to a steam-tram, and the author of _The Invisible Playmate_ tells us that his little girl wanted to stroke the “dear head” of a locomotive. A child has been known to ask whether a steam-engine was alive. In like manner, savages on first seeing the self-moving steamer take it for a big animal. The fear of a dog at the sight of an unfamiliar object appearing to move of itself, as a parasol blown along the ground by the wind, seems to imply a rudiment of the same impulse to interpret self-movement as a sign of life.[46] ----- Footnote 46: See P. Lombroso, _op. cit._, p. 26 ff. ----- The child’s impulse to give life to moving things may lead him to overlook the fact that the movement is caused by an external force, and this even when the force is exerted by himself. The boy C. on finding the cushion he was sitting upon slipping from under him in consequence of his own wriggling movements pronounced it alive. In like manner children, as suggested above, ascribe life to their moving playthings. Thus, C.’s sister when five years old stopped one day trundling her hoop, and turning to her mother, exclaimed: “Ma, I do think this hoop must be alive, it is so sensible: it goes where I want it to”. Another little girl two and a quarter years old on having a string attached to a ball put into her hand, and after swinging it round mechanically, began to notice the movement of the ball, and said to herself, “Funny ball!” In both these cases, although the movement was directly caused by the child, it was certainly in the first case, and apparently in the second, attributed to the object.