. Bulletin. Science. Figure 50.—Baudot's multiplex alphabet. From La Lumiere electrique, 1880, vol. 2, p. 83. and could never do so, even with modifications. Some scientists also took this negative position, for it seems to have been a difficult task to get this form of the telephone to reproduce unarticulated sound, let alone speech. But a kvi scientists, among them Silvanus P. Thompson in Great Britain and E. J. Houston in the United States, asserted that with proper adjustment the Reis instrument could repro- duce and transmit human speech. However, this early telephone must be considered a
. Bulletin. Science. Figure 50.—Baudot's multiplex alphabet. From La Lumiere electrique, 1880, vol. 2, p. 83. and could never do so, even with modifications. Some scientists also took this negative position, for it seems to have been a difficult task to get this form of the telephone to reproduce unarticulated sound, let alone speech. But a kvi scientists, among them Silvanus P. Thompson in Great Britain and E. J. Houston in the United States, asserted that with proper adjustment the Reis instrument could repro- duce and transmit human speech. However, this early telephone must be considered as, at best, another of the "philosophical toys" of the 19th century that later, after they had been reduced to practice, became inventions of enormous economic Figure 51.—Baudot's multiplex telegraph transmitter keyboard. The cadence counter on top of the case enabled the operator to transmit at the correct speed. From La Lumiere electrique, 1882, vol. 6, p. 81. The line of electro-acoustic experimentation that resulted in the telephone started with the discovery that an electric current could produce those mechani- cal vibrations that we hear as sound. As early as 1837, Charles Page found that when an electromagnet. Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the original Smithsonian Institution; United States. Dept. of the Interior; United States National Museum. Washington, Smithsonian Institution Press, [etc. ]; for sale by the Supt. of Docs. , U. S. Govt Print. Off
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