15 AUGUST 1914, Page 24

Modern Models. By V. E. Johnson. (C. Arthur Pearson. ls.

6d. net.)—Every normally minded boy will delight in the possession of this little book, which teaches him how to make a model aeroplane that will really fly, a model submarine, a dirigible balloon, a gyroscopic mono-rail car, a wireless tele- graphic outfit, an X-ray apparatus, &c. Of course, a consider- able proficiency in the use of tools, both for wood and metal working, is assumed; but so many schools teach this nowa- days that the book should be much in demand.