With directions for making a Speaking Telephone Illustrated 50 cents
_THE ART OF PROJECTING_
A Manual of Experimentation in Physics, Chemistry, and Natural History,
with the Porte Lumiere and Magic Lantern New Edition Revised Illustrated
$2.00
_MATTER, ETHER, AND MOTION_
The Telephone An Account of the Phenomena of Electricity, Magnetism, and Sound, as Involved in Its Action · 第 3 / 56 题