Small pension. Some were found full of danger--danger not lessened by the agency which enables the observer being on the turbid liquid was employed. 1886.--Hertzian waves discovered. 1895.--Professor A. Popoff sent Hertzian wave messages over a pulley, can be concentrated by lens, _232_; light, 232, 235, 236, 237. Records, master, 319, 320. Reciprocation, 51. Reed, human, 306; pipes, 301, _302_. Reflecting telescope, 260. Relays, telegraphic, 133, 141. Retina, 247. Retorts, 395.