Show A new telegraph wire 9 D H craig of 0 now new york who has devoted 19 years to the development of machine telegraphy and who amo among n mapy other things claims to be able t to 0 telegraph 2000 words per minute from each end of a wire a total of words la in 69 60 seconds has recently devised a new telegram telegraph wire ire made of pure re copper with a slight mixture of pi 8 ci a which is said to increase the tensile strength to twice that of steel of equal siz ethe exact tensile strength being reported at pounds to the square inch an ordinary rd inary no 4 gauge wire weighs over pounds per wile mile with such IL a wire extending from new york to bosan san francisco the electrical reaia resist tance would be about ohms i while a majority majori tv ot of the telegraph wires between new york and washington show an electrical resistance of more than ohms toe tae signification of the fact is that the new copper wire will bring san francisco nearer to new york electrically than I 1 new york is to washington non |