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Preface ... cont
Most of the above techniques predate the development of electricity and telecommunications using electronic devices, but they were nonetheless extremely effective for thousands of years. Some techniques are still used today and are particularly handy when the “power is out.”History is filled with stories
....The brave signal-fire tender along China’s Great Wall warning of the advancing Mongul hordes
....The determined and lucky WWI carrier pigeon that was seriously wounded, its leg was shot off it still flew the critical messages back to headquarters, saving hundreds of lives. Return to previous page.................... Go to Next Page.................... Go to next Chapter ( Alexander G Bell) |