Will dumb-bells and weight-boxes be necessary? Yes, or their equivalents. If the former cannot be had, flat-irons or cobble-stones of the same weight will do pretty well, and sand-bags can be used in the weight-boxes when pear-shaped weights or packed-boxes are scarce. It is a very small matter to supply a school with light dumb-bells, when they cost but five cents a pound, and when, if necessary to retrench, a quarter as many pairs of them as there are scholars will suffice. As will be shown in a later chapter, there is a very wide variety of exercises which could be practised in a school-room, which do not need one cent's worth of apparatus. They simply need to be known, and then faithfully practised, and most gratifying results are sure. In large cities it would be well to have all the teachers instructed by a competent master in the various exercises which they could so readily teach in school, and which would prove so beneficial to the scholars. London is already ahead of us in this direction. _Harper's Weekly_ of February 8th, 1879, says: "The London School Board has appointed Miss Lofving, at a salary of fifteen hundred dollars a year, as superintendent of 'physical education' in the girls' schools." A man like Dr. Sargent, of the Fifth Avenue Gymnasium, in New York, could easily, in a few half-hour lessons, instruct the two thousand or more teachers of the public schools of that city in the simpler, and yet very valuable exercises. They would be then well qualified, in turn, to instruct all the pupils, and to so grade their exercises as to adapt the work to all. The ordinary gymnastic instructor, as years have shown, in most of our gymnasiums, lets the pupil do about as he has a mind to. This would be just about as effective as if the same rule was followed out in mental training. But men like Sargent, strict disciplinarians, trained physicians, and practical gymnasts as well, are far too scarce among us, and his is a field which many of our young physicians might enter with prospects of doing very great good in the community in which they live.