The daily morning journal and courier., 1906-01-12
HUMAN VOICE IN METAL,
An Instrument Which Records Ever!
 Tone.

An Instrument Which Records Every
 Tone.
 Aperfect and practically indestruc- tible photographic device, capable of recording not only words over the tele- phone, but of reproducing every irtona tion of the human voice, every eccen- trieity of laughter or note of despair in short, an instrument which records all sounds with mechanical exactness and which can even reproduce heart beats-is in Minneapolis.
 This wonderful little instrument was brought to the city on Saturady by J. Shirley Eaton, of New York, who is the guest of w. G. Andrews during his brief stay in the city. The instru- ment is called the telegraphone, and 1t is one of the marvels of an age opulent in world-revolutionizing inventions. It is in a class with electric motor, the telephone, wireless telegraphy and the X-ray in the field of scientific wonders.
 The telegraphone is the invention, or discovery, of Danish telephone en- gineer of the name of Haldemar Poul- sen, who conceived the idea that under proper conditions magnetism could be absolutely localized at the point of contact in hard steel. This was re- volutionary to the known fundamental Pulsen prosecuted his experiments, and at last was able to announce the cor rectness of his hypothesis in crude illustration at the Paris exposition. The discovery so completely reversed the known principles of magnetism that when he later sought patents in Ameri- ca his application was denied, on the ground that his invention was impos- sible.
 | It is a far cry from the first rude con- trivance to the perfected instruments which MT Eaton brings from Dem mark to Minneapolis. The operator now talks into fine, naked wire or or onto steel disk There his voice remains to be reproduced later at pleasure. By actual test, the human voice so recorded has been reproduced as many as 10000 times without de- terioration. The wire or the disk can be rubbed with emery paper without effecting the record. Only in one way can the record be destroyed, and then it is sponged off instantly, as clean as slate and is then ready for a new record.
 The quality of the speech and the | tone of the music reproduced is as soft and clear as the most perfect trans mission over perfect telephone.
 There is no mechanical grating sound, because the record is electro magnetic and not mechanical. The operator literally talks into the mole cules of steel. Its inventor now claims that he has perfected the telephone, because the telegraphone records per- fectly both ends of the telephonic con- versation, Contracts, brokers rec ords, conferences or love messages over the telephone can all now be preserved on spool of wire and repeated limit less number of times.
 A business man can have telegra- phone transmitter on his desk and dictate all his letters to a typewrit- ing bureau, where the letters can be typewriter and sent back for signature mailing, etc. Personal letters need no { longer be written, but can be talked on to wafer of steel and sent through the mails with or without an envelope for two-cent stampt The length of the reproduction is only limited to ! the length of the wire, So that whole operas or entire plays can be listened to at home without interruption and with the original quality of tone or ar ticulation employed by the singers or actors.
 The power of this strange litle in- strument to draw the speech of an absent friend out of cold piece of steel, where it lies beyond the detection of the mtost powerful microscope, has something uncanny about it.
 The telegraphones have so far only been made in Copenhagen, Denmark, and there are not more than fifteen of the instruments in the United States Minneapolis Tribune.