If we were to place before these tests one of my children from three to four years, and one of the children from the first elementary (six or seven years old), my pupil would undoubtedly manifest a shorter period of reaction, and would not commit errors. The same may be said for the tests of the chromatic sense, etc.

This educational method should therefore prove interesting to students of experimental psychology as well as to teachers.

In conclusion, let me summarize briefly: Our didactic material renders auto-education possible, permits a methodical education of the senses. Not upon the ability of the teacher does such education rest, but upon the didactic system. This presents objects which, first, attract the spontaneous attention of the child, and, second, contain a rational gradation of stimuli.

We must not confuse the education of the senses, with the concrete ideas which may be gathered from our environment by means of the senses. Nor must this education of the senses be identical in our minds with the language through which is given the nomenclature corresponding to the concrete idea, nor with the acquisition of the abstract idea of the exercises.

Let us consider what the music master does in giving instruction in piano playing. He teaches the pupil the correct position of the body, gives him the idea of the notes, shows him the correspondence between the written notes and the touch and the position of the fingers, and then he leaves the child to perform the exercise by himself. If a pianist is to be made of this child, there must, between the ideas given by the teacher and the musical exercises, intervene long and patient application to those exercises which serve to give agility to the articulation of the fingers and of the tendons, in order that the co-ordination of special muscular movements shall become automatic, and that the muscles of the hand shall become strong through their repeated use.

The pianist must, therefore, act for himself, and the more his natural tendencies lead him to persist in these exercises the greater will be his success. However, without the direction of the master the exercise will not suffice to develop the scholar into a true pianist.

The directress of the "Children's House" must have a clear idea of the two factors which enter into her work—the guidance of the child, and the individual exercise.

Only after she has this concept clearly fixed in her mind, may she proceed to the application of a method to guide the spontaneous education of the child and to impart necessary notions to him.

In the opportune quality and in the manner of this intervention lies the personal art of the educator.

For example, in the "Children's House" in the Prati di Castello, where the pupils belong to the middle-class, I found, a month after the opening of the school, a child of five years who already knew how to compose any word, as he knew the alphabet perfectly—he had learned it in two weeks. He knew how to write on the blackboard, and in the exercises in free design he showed himself not only to be an observer, but to have some intuitive idea of perspective, drawing a house and chair very cleverly. As for the exercises of the chromatic sense, he could mix together the eight gradations of the eight colours which we use, and from this mass of sixty-four tablets, each wound with silk of a different colour or shade, he could rapidly separate the eight groups. Having done this, he would proceed with ease to arrange each colour series in perfect gradation. In this game the child would almost cover one of the little tables with a carpet of finely-shaded colours. I made the experiment, taking him to the window and showing him in full daylight one of the coloured tablets, telling him to look at it well, so that he might be able to remember it. I then sent him to the table on which all the gradations were spread out, and asked him to find the tablet like the one at which he had looked. He committed only very slight errors, often choosing the exact shade but more often the one next it, rarely a tint two grades removed from the right one. This boy had then a power of discrimination and a colour memory which were almost prodigious. Like all the other children, he was exceedingly fond of the colour exercises. But when I asked the name of the white colour spool, he hesitated for a long time before replying uncertainly "white." Now a child of such intelligence should have been able, even without the special intervention of the teacher, to learn the name of each colour.