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JOSEPH HENRY - AUTOGRAPH LETTER SIGNED 05/07/1857 - HFSID 31637

JOSEPH HENRY Joseph Henry writes a letter of regret saying that he is not able to attend due to previous engagements. Autograph Letter signed: "Joseph Henry" as Secretary of the Smithsonian, 2p, 7¾x10. Washington, D.C., 1858 January 26. To W. W. Weildon Esq, no place.

Sale Price $552.50

Reg. $650.00

Condition: slightly soiled, otherwise fine condition
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JOSEPH HENRY
Joseph Henry writes a letter of regret saying that he is not able to attend due to previous engagements.
Autograph Letter signed: "Joseph Henry" as Secretary of the Smithsonian, 2p, 7¾x10. Washington, D.C., 1858 January 26. To W. W. Weildon Esq, no place. In full: "On the opposite leaf I send you a copy, with a few [illegible] attentions, of my letter of the 7th of may [sic] I remain very truly yours obt [sic] servant," Joseph Henry (1797-1878), a physicist and scientific administrator, discovered electromagnetic induction and self-induction. He is also credited with the invention of the electric motor (1829) and later invented low-resistance and high-resistance galvanometers. In 1893, his name was given to the standard electrical unit of inductive resistance, the henry. In 1846, Henry became the first Secretary of the newly organized Smithsonian Institution, where he established a continuing tradition of research. Under his leadership, weather reporting stations were connected by telegraph in the U.S. In the spring of 1863, Henry was one of the founding members of the National Academy of Science and served as Academy President from 1867. He was both President of the National Academy of Science and Secretary of the Smithsonian Institution until his death. Alexander Twillingdeveloped the first commercially viable ice-making machine in 1856. Slightly soiled and creased. Overall, fine condition.

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