"A sound mind in a sound body is a short but full description of a happy state in this world. He that has these two has little more to wish for, and he that wants either of them will be but little the better for anything else."[24] In these words Locke sets forth for all time what should be aimed at in the physical education of the child, and in the light of modern physiological psychology the position must be emphasised anew that one of the essential conditions of sound intellectual and moral vigour is sound physical health, and that body and mind are not things apart, but that the health of the one ever conditions and is conditioned by the health of the other.

Moreover, at the present time, it is all the more necessary to insist upon the need for the systematic care of the physical culture of the child, since in many cases the conditions under which the children of the poor live in our great towns are most prejudicial to the full and free development of the organs of the body. The narrow, overbuilt streets in the poorer parts of our towns, the overcrowding of the people in tenements, the unhygienic conditions under which the vast majority of our very poor live and sleep, are all active forces in preventing the full and free development of the physical powers of the child. Thus the purely educational problem of how best to promote the physical health and development of the child by the systematic exercises of the school is involved in the much larger and more important social problem of how to better the conditions under which the very poor live. The agencies of the school can do little permanently to improve the physique of the children until, concurrently with the school, society endeavours to improve the social conditions under which the poorest of the population of our great cities herd together. For a similar reason much of the endeavour of the school to found and establish in the child's mind interests of social worth is counteracted by the evil influence of its home and social environment. If the physical, economic, and ethical efficiency of the children of the slums is ever to be secured, if we are ever to attain a permanent result, then concurrently with the creation of new and higher social interests must go hand in hand changes in the social environment of the child. Mere betterment of the physical conditions under which our slum population live is of no avail unless at the same time we have a corresponding change in the slum mind by the rise and prevalence of a higher ideal of the physical and material conditions under which their lives ought to be spent.

For experience has shown in many cases that the mere betterment of the material conditions under which the poor live without any corresponding change of ideals soon results in the re-creation of the miserable conditions which formerly prevailed. On the other hand, the mere instilling of new ideals into the minds of the rising generation will effect little, if during the greater part of the school period and altogether afterwards we leave the child to overcome the evil influences of his environment as best he may. The ideals of the school are too weak, too feebly established, to prevail against the ever present and ever potent influences of the environment unless side by side with the rise of the new ideals we at the same time endeavour to lessen, if we cannot altogether remove, the obstacles which prevent their realisation and prevalence. This problem of how to raise by education and by means of the other social agencies at work the children of the slums to a higher ideal of life and conduct and to secure their future social efficiency is the most urgent problem of our day and generation. Mere school reforms in physical and intellectual education will effect little unless the other aspects of the problem are attacked at the same time.

Further, our school system, which requires that the child should restrain his instinctive tendencies to action, and for certain hours each day assume a more or less passive and cramped attitude, is also prejudicial to the development and free play of the organs of the body which have entrusted to them the discharge of certain functional activities.

Hence the evil effects of the school itself must be removed or remedied by some means having as their aim the increased functional activity of the respiratory and circulatory systems of the body. And therefore the aim of any system of physical exercises should be not merely increase of bone and development of muscle but also the sustaining and improving of the bodily health of the child by "expanding the lungs, quickening the circulation, and shaking the viscera." This, as we shall see later, is not the only aim of physical education. It may further aid in mental growth and development, and be instrumental in the production of certain mental and moral qualities of value both to the individual and to the community.

Another cause operating in the school to prevent the full and free development of the body is the method of much of the teaching which prevails. A quite unnecessary strain is often put upon the nervous system of the child, and as a consequence a lassitude of body results which physical exercise not only does not tend to remove but actually tends to increase. Methods of teaching which fail to arouse any inherent interest in the attainment of an end of felt value to the child require for the evoking and maintaining of his active attention the operation of some powerful indirect interest, and if persisted in, such methods soon result in the overworking and exhaustion of some one particular system of nervous centres, and in the depletion through non-nutrition of other centres. As a consequence, the child is unable to take any part in physical exercises or in school games with profit to himself. He is content to loaf and do as little as he can. The evil is further intensified if there is also present under or improper nutrition of the child.

Thus along with our schemes for the physical education of the child we must endeavour to improve the methods of our teachers, to make them understand that experiences acquired through the arousing of the direct interest of the child are acquired at the least physiological cost, and to make them realise under what conditions this direct interest can be aroused and maintained. No one indeed wishes to make everything in the school pleasant to the child, or to reduce self-effort to a minimum. But effort and interest are not opposed terms. The effort which is evoked in the realisation of an interest or end of felt value is the only kind of effort which possesses any educational value. The effort which is called forth in the finding and establishing of a system of means towards an end which the child fails to see, and which, as a consequence, rouses no direct interest in its attainment, is an effort which should for ever be banished from the schoolroom. Such, e.g., is the effort evoked in the mere cramming of empty lists of words or dates or facts. Little mental good results from such a process, and the physiological cost is often great.

Let us now consider the conditions necessary for sound physical health, and inquire how far the school agencies can aid in the providing of these conditions: they are mainly four in number. In the first place, in order to secure the full growth and development of the bodily powers, there is needed a sufficiency of food. But mere sufficiency is not enough, the food must be varied in quality in order to meet the various needs of the body, and must be prepared in such a way as to be readily assimilated and rendered fit for the nutrition of both body and mind. Manifestly the home ought to be the chief agent in providing for this need. But, as we have seen in considering the problem of the feeding of school children, the home in many cases is unable adequately to provide for it, and, for a time at least, some method of public provision of good and wholesome food for the children of the poor may be rendered necessary. But much of the physical evil results from improper nutrition; and here the school agencies may do a great deal in the future by furthering the teaching of domestic science to the girls of the working classes. Such teaching, however, if it is to be effective, must be real and must take into account the actual conditions under which their future lives are to be spent. At the present time much of the teaching is valueless, through its neglect of the actual income and resources of the working man's home.

The second condition necessary for bodily growth and development is a sufficiency of pure air. This is necessary, since the oxygen of the air is not only the active agent in the maintenance of life, but is also requisite for the combustion of the foodstuffs conveyed into the body. Much has been done within recent years in our schools to provide well-ventilated classrooms and to instruct teachers how to keep the air of the school pure. Here again the problem is to a large extent a social one, involving the better housing of our great town population.

A third condition necessary for the physical development of the child is sleep sufficient in quantity and good in quality. The weak, puny children in arms to be seen in our crowded slums owe their condition, in many cases, to the want of sound sleep, to the fact that they never are allowed to rest, as much as to the under and improper feeding to which they are subjected. As we shall see in the next chapter, much might be done by the establishment of Free Kindergarten Schools in our overcrowded districts to alleviate the lot and to better the education of the very young children of the poor.

But in addition to the three conditions already named, which may be classed together as the nutritive factors in bodily growth, there is a fourth condition essential for all development, whether bodily or mental—viz., exercise. For "development is produced by exercise of function, use of faculty.... If we wish to develop the hand, we must exercise the hand. If we wish to develop the body, we must exercise the body. If we wish to develop the mind, we must exercise the mind. If we wish to develop the whole human being, we must exercise the whole human being."[25]

But any form of exercise will not do. The exercise which is given must be given at the right time, must be in harmony with the nature of the organ exercised, and must be proportioned to the strength of the organ, if true development is to be attained.

In order to understand this in so far as it bears upon the aims which we should set before us in the physical education of the child, it is necessary that we should understand what modern physiological psychology has to teach us of the nature of the nervous system.

If the reader will look back to an earlier chapter,[26] he will find that education was defined as the process by which experiences are acquired and organised in order that they may render the performance of future action more efficient, or alternatively it is the process by which systems of means are formed, organised, and established for the attainment of various ends of felt value. The establishment of these systems of means is only possible because in the human infant the nervous system is relatively unformed at birth, is relatively plastic, and so is capable of being organised in such and such a definite manner. On the other hand, in many animals the nervous system of each is definitely formed at birth; it is so organised that experience does little to add to or aid in its further development. Now, while the nervous system of the child at birth is not so definitely organised as that of many animals, yet on the other hand it is not wholly plastic, wholly unformed, so that, as many psychologists and educationalists once believed, it can be moulded into any shape we please.

Rather, we have to conceive of the nervous system of the human infant as made up of a series of systems at different degrees of development and with varying degrees of organisation.[27] Some centres, as e.g. those which have to do with the regulation of certain reflex and automatic actions, start at once into full functional activity; others, as e.g. those which have to do with purely intellectual functions, are relatively unformed and unorganised at birth, and become organised as the result of conscious effort, as the result of an educational process, as the result of acquiring, organising, and establishing experiences for the attainment of ends of acquired value.

Between the systems at the lowest level and those at the highest we have centres of varying degrees of organisation at birth. Moreover, these centres of the middle level reach their full maturity at different rates. The centres, e.g., which have to do with the co-ordination of hand and eye and with the attainment of control over the limbs of the body reach their full functional activity before, e.g., the centres having control of the lips and speech. The centres, again, which have to do with the co-ordination of the sensory material derived through the particular senses are still longer in reaching their full functional activity, while the higher intellectual centres may not reach their highest power until well on in life. Hence, since education is the process of acquiring experiences that shall modify future activity, it can do little positively to aid the development of the lowest centres; it can do more to modify the development of the middle centres; while the highest centres of all are in great part organised as the result of direct individual experience.

As regards the systems of the lowest level, what we have then to aim at is to allow them free room for growth, and to correct as far as possible faults due either to the imperfections of nature or to the unnatural conditions under which the child lives. So long as these systems are provided with nutrition and allowed freedom in performing their functions, we are unaware of their existence. We, e.g., only become aware that we possess a circulatory system or a respiratory or a digestive system when the functional activity of these organs is impeded. The opinion, therefore, that physical exercise has for its chief aim the sustaining and improving of the bodily health is no doubt true and correct, but it is not the only aim. On this view we are considering only the lowest system of centres, and devising means by which we may maintain and improve their functional activity. Moreover, it is necessary to endeavour to secure the free development of these centres and their unimpeded functional activity, because otherwise the development of the higher centres is hindered, and the whole nervous system rendered unstable and insecure.

But a wise system of physical education must take into account the fact that a carefully selected and organised system of exercises can do much for the development of the centres of the middle level which have to do with the proper co-ordination of various bodily movements. These are only partly organised at birth, and education—the acquiring and organising of experiences—is necessary for their due organisation and their adaptation as systems of means for the attainment of definite ends. It is for this reason that the beginning of the formal education of the child at too early an age is physiologically and psychologically erroneous. In doing this we are neglecting the lower centres at the time when by nature they are reaching their full functional activity, and exercising the higher which are at an unripe stage of development. Moreover, lower centres not exercised during the period when they are attaining their full development never attain the same functional development if exercised later. Hence the difficulty of acquiring a manual dexterity later in life. Again, it is on this theory of lower and higher centres maturing at different rates and attaining their full functional activity at different times that we now base our education of the mentally defective. We must organise the lower centres; we must educate the mentally defective child to get control over these already partially organised centres, before we begin to educate the higher and less organised centres. Moreover, it is only in so far as we can secure this end that we can stably build up and organise the higher centres of the nervous system. Hence also such qualities as alertness in receiving orders and promptness and accuracy in carrying them out are, at first, best learned through the organising and training of the centres of the middle level. What we really endeavour to do here is to organise and establish systems of means for the attainment of definite ends, which through their systematic organisation can be brought into action when required promptly and quickly, and once aroused work themselves out with a minimum of effort and with a low degree of attention, so that their performance involves the least possible physiological cost.

From this the reader will understand that the aim of physical education is the aim of all education, viz., to acquire and organise experiences that will render future action more efficient.

Moreover, the early training of the centres of the middle level is important for the after technical training of our workmen. The boy or girl who has never been educated in early life to co-ordinate and carry out bodily movements promptly and accurately is not likely to succeed in after-life in any employment which requires the ready and exact co-ordination of many movements for the attainment of a definite end. The proper physical education of the child is therefore necessary for the securing of the after economic efficiency of the individual, and it can also by the development of certain mental and moral qualities be made instrumental in the development of the ethically efficient person.

We must now briefly note two other educational agencies which may be employed in the securing of the physical and mental efficiency of the child—play and games. Psychologically, games stand midway between play and work. In play we have an inherited system of means evoked into activity and carried out to an end for the pure pleasure derived from the activity itself. Such systems at first are imperfectly organised, but through the experience derived the systems become more and better adapted for the attainment of the ends which they are intended to realise. In games, on the other hand, the activity is undertaken for an end only partially connected with the means by which it is attained, whilst in work the means may have no intrinsic connection with the end desired. Hence the effort of a disagreeable nature which work often evokes.

In animals fully equipped at birth by means of instinct for the performance of actions the play-activity is altogether absent. Their lives are wholly business-like. On the other hand, in the higher animals, whose young have a period of infancy, play is nature's instrument of education. By means of it the systems of the middle level which form the larger part of the brain equipment of the higher animals are gradually organised and fitted for the attainment of the ends which in mature life they are intended to realise. Play is their education—is the means by which nature works in order that experiences may be acquired and organised that shall render future action more efficient. Without this power, "the higher animals could not reach their full development; the stimulus necessary for the growth of their bodies and minds would be lacking."[28]

Play also is nature's instrument in the education of the young child. The first and most important part of his education is obtained by this means, and, on the basis thus laid, must all after-education be built. Hence the importance in early life of allowing full freedom for the manifestation of this activity. Hence also the very great importance of securing that the children of the poor should be provided with the means of realising the playful activities of their nature and of being stimulated and encouraged to play. Hence one aim of the Kindergarten School is to utilise the play-activity of the child in the development of his body and mind.[29]

The third agency which we may employ in developing the physical powers of the child is that of games. Games, however, are not merely useful as means for the attainment of the physical development of the boy or girl; they also may be made instrumental in the creation and fostering of certain mental and moral qualities of the greatest after-value to the community. No one acquainted with the important part which games perform in the life of the Public School boy can doubt their great educational value. By means of them the boy acquires experiences which in after-life tend to make more efficient certain classes of actions essential for any corporate or communal life. In the playing-fields he learns what it is to be a member of a corporate body whose good and not the attainment of his own private ends must be the first consideration. Through the medium of the games of the school he may get to know the meaning of self-sacrifice, of working with his fellows for a common end or purpose, and of sinking his own individuality for the sake of his side. In addition he learns the habits of ready obedience to superior knowledge and ability; to submit to discipline; and to undergo fatigue for the common good. If found worthy, he may learn how to command as well as to obey, to think out means for the attainment of ends, and to know and feel that the good name of the school rests upon his shoulders. These and other qualities similar in character may be created and established by means of the games of the school. And just as the utilising of the play-instinct is nature's method of education in the fitting of the young animal and the young child to adapt itself in the future to its physical environment, so we may lay down that the games of the school may be largely utilised as society's method of fitting the individual to his after social environment, and in training him to understand the true meaning and the real purport of corporate life.

On account, however, of the vast size of many of our Public Elementary Schools and for other reasons, such as the limited playground accommodation in many cases and the want of playing-fields, organised games play but a small part in the physical and moral education of the children attending such schools. But even here much more might be done than is done at present by the teachers in the playground to encourage the simpler playground games, and "to replace the disorganised rough and tumble exercises which characterise the activities of so many of our poorer population by some form of organised activity."[30] The aimless parading of our streets by the sons and daughters of the working and lower middle classes in their leisure time, the rough horseplay of the youth of the lowest classes, are due in large measure to the fact that during the school period they have not been habituated to take part with their fellows in any form of organised activity, have never realised what a corporate life means, and as a consequence are devoid of any social interests.

One other question must be briefly considered, viz., How far should we in the physical education of the youth keep in view the end of securing the military efficiency of the nation? As Adam Smith pointed out, the defence of any society against the violence and invasion of other independent societies is the first duty of the sovereign. "An industrious, and upon that account a wealthy nation is of all nations the most likely to be attacked, and unless the State takes some measures for the public defence, the natural habits of the people render them altogether incapable of defending themselves."[31] He further asserts that "even though the martial spirit of the people were of no use towards the defence of the society, yet to prevent that sort of mental mutilation, deformity, and wretchedness which cowardice necessarily involves in it, from spreading themselves through the great body of the people, it would still deserve the most serious attention of Government."[32]

On these three grounds, then, that the defence of the country is the first duty of every Government and therefore the first duty of every citizen, that a nation engaged in commerce tends to render itself unfit to defend itself unless means are devised to keep alive the patriotic spirit, and that the keeping alive of the patriotic spirit is useful for the cultivation of certain necessary social qualities, we may maintain that the military efficiency of the youth should be included amongst the aims of any national system of physical education. If the emphasis which is laid upon the securing of the after military efficiency of the youth of the nation occupies too prominent a place in the schemes of physical education of some Continental countries, we on the other hand have almost wholly neglected this aspect of the question. Every encouragement therefore should be given to the formation of cadet and rifle corps in the Secondary Schools of the country and in the Evening Continuation Schools attended by the sons of the working classes. The time when systematic instruction in military exercises and in the use of arms shall form part of every youth's education has not yet arrived, but the necessity for some such step looms already on the horizon.