Upwards of thirty signal stations have been established at various points on the coasts of the British Isles, where messages may be transmitted from passing vessels by means of the International Code; and there are twenty stations in various parts of the world, as widely apart as Aden, Ascension, Malta, St Helena, the Cape of Good Hope, and Skagen in Denmark, where communication may be effected by the same means. Many of these stations have direct telegraphic connection with London, so that shipowners may be kept acquainted with the movements of their vessels, and may also transmit instructions for the guidance of their captains. It is matter for wonder and regret, notwithstanding the existence of a carefully elaborated system of signals and a world-wide network of shore stations, that the use of the Signal Code is not in any sense compulsory on the part of shipowners. Considering the innumerable advantages which a speedy means of communication must afford to all concerned, it is with surprise that one learns, from a note prefixed to the official Maritime Directory for the past year, that ‘cases have been reported in which officers at the signal stations have hoisted the International Code Signals warning ships of danger, and the ships have been afterwards lost, from the inability of the masters to read the signals.’ This is a state of affairs which ought not to be permitted to continue in the interests of the men whose lives are at stake. Another and still more serious defect in a system which is admirable in many respects, is the total absence from the Code of any method of signalling at night. As we have seen, Her Majesty’s ships are provided with appliances for this purpose which are skilfully adapted to the end in view; but merchant vessels are absolutely without the power of communicating after darkness sets in. It is true that by private arrangement with the shore stations on several parts of the coast, the steamers belonging to the great Companies may by the use of certain lights indicate their names and the Company to which they belong; but this cannot, save in the most elementary sense, be regarded as a satisfactory method of communication. It is probable that the night signals in use in the Royal Navy are too complicated in character to permit of their being learned and worked efficiently without much more study and practice than can reasonably be expected from the master of a merchant vessel. Still, it ought to be within the power of science to suggest some plan for enabling a vessel to signal to ship or shore during the hours when the perils of the sea are rendered more terrible by darkness.