My newest invention transmits speech telegraphically. The idea for the invention actually came to my mind in 1874. As I thought, if I could make currents of electricity vary in intensity at the exact same rate as the air varies in density during the production of sound, I should be able to transmit speech telegraphically. I'm not sure if i should start selling it or not. Please help me decide by taking the survey below. A picture and name is coming soon! I hope the government will grant my patent. :)