INTRODUCTION to do it, might very well be the title of this new handy-book for American boys. It is first and last a practical guide, based upon the experience of those who have done what they describe. Results a-e wanted, not theories in a book of this kind, and careful tests have been applied to secure working results and the certainty that everything mill come out all right, Another point, which has had the most carcful attention of a board of editors, is that of selection. It rvould be easy to include a quantity of sports and games, and also plans for elaborate contrivances neither particularly amusing nor necessary when done. But the object of this book is to show boys how to do accurately things which are quite within their powers, ancl things also which will be a satis- faction when they arc done. The plan folloved is to develop a boys ingenuity and mechanical ability along lines which will reward him. In short, the book is intended to help a boy to think and act for himself and to have fun ill doing it. The plan of arrangement which is followed is the natural one-to begin at home. The back yard lies immediately at hand. Let us see what can be done there. The aquarium, pet shelters, windmills, and many other contrivances are identified with the home. xi Going farther afield we lcarn the making of coasters and skees. ice-boats and snow cannon, and all that enters into winter sports...