Posted by Mike Jones on April 29, 2013 at 00:19:11 user Mike_Jones.
In Reply to: Semaphore Dancing Figures posted by David Maxwell on April 27, 2013 at 10:44:35:
Semaphore was widely used for communication between ships at sea from the mid-nineteenth century and AR used the standard code. I expect boy scouts used it too. Conan Doyle would almost certainly have been aware of semaphore