The book measures 5 × 7½ in., and is beautifully bound in cloth. It contains 141 pages and 125 illustrations. Complete directions are given for making 152 different pieces of Apparatus for the practical use of students, teachers, and others who wish to experiment.
PRICE, POST-PAID, $1.00.
The shocking coils, telegraph instruments, batteries, electromagnets, motors, etc., etc., are so simple in construction that any boy of average ability can make them; in fact, the illustrations have been made directly from apparatus constructed by young boys.
The author has been working along this line for several years, and he has been able, with the help of boys, to devise a complete line of simple electrical apparatus.
THE APPARATUS IS SIMPLE because the designs and methods of construction have been worked out practically in the school-room, absolutely no machine-work being required.
THE APPARATUS IS PRACTICAL because it has been designed for real use in the experimental study of elementary electricity.
THE APPARATUS IS CHEAP because most of the parts can be made of old tin cans and cracker boxes, bolts, screws, wires and wood.