Sydney advices state the death there of Dr Gilchrist, Presbyterian divine, formerly col league of the late Dr Lang. The General Post Office at London is carrying out a series of experiments in the transmission of electric waves. These have been transmitted and received without con necting wires. Mr William Henry Preece, engineer-in-chief of the engineering depart ment of telegraphs, considers that the system will be of considerable value as a means of communicating between lighthouses and ships at sea.
