Electrical Science. In the Physlknllscho Zeltschrlft, t)r. A. Korn describes a new receiver for telnutography and tho tolegrahplc transmission of half-tone process blocks. In the transmitting apparatus the writing; of the points and llnea of the half-lone blocks are formed by a non-conilnct'ng Ink on ft sheet of metal foil. This la wrapped round the surface of a cylinder which la rotated with uniform angular velocity. The electrio current Is transmitted by means of a metal pen which moves forward 0.01 Inch In each revolution. In the receiving apparatus the cylinder cylin-der la rotated with an angular Telocity Teloc-ity greater by one per cent than In the transmitting apparatus, and at the end of each revolution Is made to await synchronizing signal by which It la restrained. The Impression at the station Is produced on sensitized paper by ft small electric lamp or vacuum tube, which by means of sultnbln relay of Testa currents Is mado to glow whenevor the pen at tho trnnsmlltlng station pauses over n nonconducting portion of the picture. pic-ture. Tho paper la Illustrated by specimens nf hand-writing transmitted transmit-ted by this method.