March 10, 15, and 17, 1849. J.J. Speed's experiments and speculations concerning telegraph science. Topics: Telegraph business correspondence: materials and supplies, finances, western lines, conflict with O'Reilly's lines, new lines, stocks. Personal names: Bristol, John S.; Smith, F.O.J.; Briggs, Amos; Speed, J.J.; Cornell, Alonzo B.; Dunham, J.; Cobb, Emory Geography: Detroit; New York City; Ithaca, N.Y.; Fredonia, N.Y.