PROGRESS IN DISCOVERY AND INVENTION.
The First Steamboat and its Maker, 184
Telegraphing before Morse, 196
The New Light of Men, 205
The Telephone, 216
The Machine That Talks Back, 225
Evolution of the Dynamo, by Professor Joseph
P. Naylor, 235
The Unknown Ray and Entography, 244
Notable Events of the Nineteenth Century Great Deeds of Men and Nations and the Progress of the World · 第 9 / 65 题