New Tesla Coil Book

The Tesla High Frequency Coil, Its Construction and Uses. By George F. Haller and Elmer T. Cunningham. New York: D. Van Nostrand Company. 1910. 119 pages, with 56 illustrations. Price, $1.25.

After a careful study of a twelve-inch spark coil the authors set forth in this book much information designed to save the builder of a Tesla coil time and trouble over details. One chapter of fourteen pages, is given up to the uses of the coil for lighting vacuum tubes, Roentgen ray work, etc.