Note: Project Gutenberg also has an HTML version of this file which includes the original illustrations. See 44665-h.htm or 44665-h.zip: (http://www.gutenberg.org/files/44665/44665-h/44665-h.htm) or (http://www.gutenberg.org/files/44665/44665-h.zip) Images of the original pages are available through Internet Archive. See https://archive.org/details/thingsboyshouldk00stjo Transcriber's note: Text enclosed by underscores is in italics (_italics_). Text enclosed by equal signs is in bold face (=bold=). Characters enclosed by curly brackets after an underscore are subscripts (example: CuSO_{4} [the chemical formula of copper sulfate]). THINGS A BOY SHOULD KNOW ABOUT ELECTRICITY [Illustration] * * * * * _BY THE SAME AUTHOR._ =FUN WITH MAGNETISM.= A book and complete outfit of apparatus for _Sixty-One Experiments_. =FUN WITH ELECTRICITY.= A book and complete outfit of apparatus for _Sixty Experiments_. =FUN WITH PUZZLES.= A book, key and complete outfit for _Four Hundred Puzzles_. =FUN WITH SOAP-BUBBLES.= A book and complete outfit of apparatus for _Fancy Bubbles and Films_. =FUN WITH SHADOWS.= Including book of instructions with one hundred illustrations and a complete outfit of apparatus for _Shadow Pictures, Pantomimes, Entertainments, etc., etc._ =HUSTLE-BALL.= An American game. Played by means of magic wands and polished balls of steel. =JINGO.= The great war game, including JINGO JUNIOR. =HOW TWO BOYS MADE THEIR OWN ELECTRICAL APPARATUS.= A book containing complete directions for making all kinds of simple apparatus for the study of elementary electricity. =THE STUDY OF ELEMENTARY ELECTRICITY AND MAGNETISM BY EXPERIMENT.= This book is designed as a text-book for amateurs, students, and others who wish to take up a systematic course of simple experiments at home or in school. =THINGS A BOY SHOULD KNOW ABOUT ELECTRICITY.= This book explains, in simple, straightforward language, many things about electricity; things in which the American boy is intensely interested; things he wants to know; things he should know. =ANS., OR ACCURACY, NEATNESS AND SPEED.= For teachers and pupils. Containing study-charts, practice devices and special methods for accurate, rapid work with figures. _Ask Your Bookseller, Stationer, or Toy Dealer for our Books, Games, Puzzles, Educational Amusements, Etc._ CATALOGUE UPON APPLICATION Thomas M. St. John, 407 West 51st St., New York. * * * * * THINGS A BOY SHOULD KNOW ABOUT ELECTRICITY by THOMAS M. ST. JOHN, Met. E. Author of "Fun With Magnetism," "Fun With Electricity," "How Two Boys Made Their Own Electrical Apparatus," "The Study of Elementary Electricity and Magnetism by Experiment," etc. SECOND EDITION