There is one new field of investigation which is illustrating in a curious way the wizard influence wielded by childish imagination over the things of sense. It is well known that a certain number of people habitually "colour" the sounds they hear, imagining, for example, the sound of a particular vowel or musical tone to have its characteristic tint, which they are able to describe accurately. This "coloured hearing," as it is called, is always traced back to the dimly recalled age of childhood. Children are now beginning to be tested as to their possession of this trick of fancy. It was found in the case of a number of school-children that nearly 40 per cent. described the tones of certain instruments as coloured. There was, however, no agreement among these children as to the particular tint belonging to a given sound: thus whereas one child mentally "saw" the tone of a fife as pale or bright, another saw it as dark. I have confined myself here to what I have called the _play_ of imagination, the magical transmuting of things through the sheer liveliness of childish fancy. The degree of transmutation will of course vary with the intensity of the imagination. Sometimes when a child dwells on the fancy it may grow into a momentary illusion. A little girl of four, sitting by the side of her mother in the garden, picked up a small pink worm and said: "Ah! you do look nice; how a thrush would like you!" and thereupon, realising the part of the fortunate thrush, proceeded, to her mother's horror, to eat up the worm quite composedly. The momentary illusion of something nice to eat, here produced by a lively realisation of a part, may arise in other cases from strong feeling, more especially fear, which, as we shall see, has so large a dominion over the young mind. This witchcraft of the young fancy in veiling and transforming the actual surroundings is a good deal restrained by the practical needs of every-day life and by intercourse with older and graver folk. There are, however, regions of child-life where it knows no check. One of these is child's play, to be spoken of presently: another is the filling up of the blank spaces in the visible world with the products of fancy. We will call these regions on which the young wing of fancy is wont to alight and rest, fancy's resting-places. _Fancy's Resting-places._