THE SEMAPHORE ON PUTNEY ' HEATH. ' REMINISCENCES SUGCESTED BY THE PORTSMOUTH DISASTER
... explained a plan of sigualling by means of a framework, contammg shutters, so arranged that by means of cord they might mdividually show the completo shulier or only the Lhin edge, which would practically be rot scen at a d a tancc. In March, 1795, Murray became ...