How Two Boys Made Their Own Electrical Apparatus: Containing Complete Directions for Making All Kinds of Simple Apparatus for the Study of Elementary Electricity

"How Two Boys Made Their Own Electrical Apparatus" by Thomas M. St. John is a practical guidebook focused on educational and DIY electrical experiments, likely written in the late 19th century. The book provides detailed instructions for young readers interested in building various electrical devices, encouraging experimentation with simple materials and apparatuses. It aims to inspire boys to understand the principles of electricity by constructing working models. The opening of the work establishes the author's credentials and outlines the book's intention to engage and educate boys in the practicalities of electrical engineering. St. John emphasizes the accessibility of the materials needed for the projects, which include items commonly found at home, like tin cans and wood. Through illustrations and explicit instructions, the book aims to guide readers in creating over 150 different types of electrical apparatus, starting with the basic components like cells and batteries. This approach is meant to demystify electricity and foster an understanding of its applications and principles through hands-on learning.