Evening Republican, Volume 21, Number 301, Rensselaer, Jasper County, 26 December 1917 — Sky Signs in London. [ARTICLE]

Sky Signs in London.

The failure of the siren to rise above the “roar of London” has caused the authorities to experiment with sky signs. Once before the government, experienced a difficulty In warning London of the approach of an enemj; At the time when Napoleon threatened England with invasion elaborate preparations were made to cut the mala roads leading to London. The warning for the City Fencibles to proceed with then? operations was to be given from the coast the moment the French

transports were sighted. Various means of communicating the warning were tried, and in the end it was dethat beacons should be used by night and smoke clouds by day. Many false alarms were given, but though Napoleon’s troops were on the point of embarking on more than one occasion they never left' Boulogne.—Dundee Advertiser.