Dr. Stanley Hall makes the suggestion that books on the leading trades should be written to stimulate the interest and intelligence of the young who are engaged in industry or preparing to become the wage earners of the trades. In speaking of "the urgent necessity now of books on the leading trades addressed to the young," he says;[A] "The leather industry, particularly boot and shoe manufacture, is perhaps the most highly specialised of all in the sense that an operator may work a lifetime in any one of the between three and four score processes through which a shoe passes and know little of all the rest. Now the _Shoe Book_ should describe hides and leathers, tanning,--old and new methods, with a little of the natural history of the animals, describe the process of taking them, of curing and shipping, each stage in the factory, designating those processes that require skill and those that do not, and so on to packing, labeling and shipping, with descriptions showing the principles of the chief machines and labor-saving devices, at any rate so far as they are not trade secrets; it should include a glance at markets, prices, effects of business advance, depression and strikes, perhaps something about the hygiene of the foot, about bootblacks and what is done for them, history of the festivals and organizations from St. Crispin and the guilds down, tariffs, syndicates, societies, statistics, social conditions in shoe towns, nationality of operatives,--all these could be concisely set forth to show the dimensions, the centers of interest, the social and commercial relations of the business, etc. What is not yet realized is that all these things could and should be put down in print and picture, almost as if it were to be issued as a text-book or a series of them; all of this could be done to bring out the very high degree of culture value now latent in the subject. Just this is what pedagogues do not and will not see, and what even shoe men fail to realize; viz., that the story of their craft rightly told, would tend to give it some degree of professional and humanistic interest and dignity which the most unskilled and transient employee would feel. It would foster an esprit de corps, pride in membership and above all an intelligent view of the whole field that would make labor more valuable and more loyal. This material, once gathered, should be used in some form in all industrial schools and courses in towns where this industry dominates. It would bring a wholesome sense of corporeity, historic and economic unity, would give a touch of the old guild spirit and more power to see both sides on the part of both employers and workmen. Nothing is so truly educational in the deepest psychological sense of that word as useful information vitalized by individual and vocational interest." [Footnote A: Stanley Hall, Educational Problems; p. 624.]