None of the inventions that have resulted from the study of electricity have been stumbled upon in the dark. Scientists in both England and America had realized the possibility of the telegraph before Morse built his first working outfit in his rooms on Washington Square. Edison took out a patent covering wireless telegraphy before Marconi gave his name to the new means of communication. Often a man who has been following one trail through this new field has come upon another, glanced down it, and decided to go back and explore it more thoroughly another day.
