Exhibit of Experimental Electrical Apparatus
AT THE ELECTRICAL SHOW, MADISON SQUARE GARDEN, NEW YORK.
While only 40 pieces of simple apparatus were shown in this exhibit, it gave visitors something of an idea
of what young boys can do if given proper designs.
"HOW TWO BOYS MADE THEIR OWN ELECTRICAL APPARATUS"
Gives Proper Designs—Designs for over 150 Things.
[ Just Published.]
How Two Boys Made Their Own Electrical Apparatus.
Containing complete directions for making all kinds of simple electrical apparatus for the study of elementary electricity. By Professor Thomas M. St. John, New York City.