Chapter 22 No.22

Long-distance telephone, 245.

M

Magnetic Telegraph Co., 93.

Marconi, boyhood, 199;

accomplished wireless telegraphy, 202;

demonstration in England, 209;

Transatlantic telegraphy, 217;

Marconi Telegraph Company, 220.

Marine signals on Argonautic expedition, 15.

Mirror galvanometer, 127.

Mirrors of Pharaoh, 17.

Morse