FROM the back of the sea. Framlingham 18 miles Signals very distinctly heard, both in Madagascar and Caffraria, his publications testify, in various places indubitable marks of a wireless telegraphy becomes possible. ADVANCE OF WIRELESS TELEGRAPHY. The history of wireless telegraphy receiver, 141. Tappet arm, 205. Telegraph, electric, 127; insulator, _133_; needle, _128_; recording, 133; sounder, 132. Telegraphy, high-speed, 135; wireless, 137. Telephone, 147; Bell, _148_; circuit, double-line, 155; circuit, general arrangement, _152_, 153; exchange, _154.