. Bulletin. Science. ^AK: JeVea iol fw te^ .^i/f/H/Ar/r/r-i'/l- OcjU-^d^^^A /ii^^-^SX- /i_^».y^. r Oe Mw/7^'l /^ r Ji-'c/ Qo I -y/is olcteiL ;liylo5o d!r7i AJiocm.'/h. /(^ inivtau hcJi'/ â 0 0 00 ii- m ^ incA-Actni^^ yai/Ylc) <./u,:f oJo/i Q^cnt~D 'J dtV'ca--^' UiveJ^i'i' c'n Lalf^- c/ 7^ Figure 3.âMoney order sent by semaphore telegraph in 1816. Note the telegraph Mercury is carrying. Photo courtesy of the Burndv Librarv. over actual land lines, still it was the first galvanic telegraph that was worked out, and it stimulated development of other electrical telegraphs both d
. Bulletin. Science. ^AK: JeVea iol fw te^ .^i/f/H/Ar/r/r-i'/l- OcjU-^d^^^A /ii^^-^SX- /i_^».y^. r Oe Mw/7^'l /^ r Ji-'c/ Qo I -y/is olcteiL ;liylo5o d!r7i AJiocm.'/h. /(^ inivtau hcJi'/ â 0 0 00 ii- m ^ incA-Actni^^ yai/Ylc) <./u,:f oJo/i Q^cnt~D 'J dtV'ca--^' UiveJ^i'i' c'n Lalf^- c/ 7^ Figure 3.âMoney order sent by semaphore telegraph in 1816. Note the telegraph Mercury is carrying. Photo courtesy of the Burndv Librarv. over actual land lines, still it was the first galvanic telegraph that was worked out, and it stimulated development of other electrical telegraphs both directly and indirectly. Thus in 1816 J. R. Coxe ^ suggested another electrochemical telegraph. 5 J. R. Coxe, "Use of Galvanism as a Telegraph," Annals of Philosophy, 1816, vol. 7, pp. 162-163. Andre Marie Ampere ^ was the first of many to see in Hans Oersted's discovery of a relationship between galvanism and magnetism a means of signaling at a distance. However, Ampere did not immediately 6 A. M. Ampere, "Memoire . . sur les effets des courans electriques," Annales de chimie et de physique, 1820, vol. 15, pp. 59-76, 170-218. PAPER 29: DEVELOPMENT OF ELECTRICAL TECHNOLOGY IN THE 19TH CENTURY: II 277. 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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