SKETCH OF SIR CHARLES WHEATSTONE. 365 



uated by one central clock. In Comptes Bendus (1845), he explained 

 the principle of an electro-magnetic chronoscope. Subjects connected 

 with telegraphy and electricity are treated in papers entitled "Elec- 

 tro-magnetic Telegraph " (1 840) ; " Constants of Voltaic Circuit " 

 (1843); "Meteorological Registers" (1844); "Submarine Cable of 

 the Mediterranean " (1854-55) ; " Aluminium in Voltaic Series " 

 (1854-55); "Automatic Telegraphy" (1859). To complete the list 

 of his papers, we name a " Letter to Colonel Sabine on Meteorologi- 

 cal Instruments " (1842) ; " Determination of Solar Time by Polari- 

 zation " (1848) ; " Foucault's Rotation of the Earth " (1851) ; "Pow- 

 ers for Arithmetical Progression " (1854-'55) ; " Report on Captive 

 Balloons" (1863). 



Wheatstone was chosen Fellow of the Royal Society of London 

 in 1836. He was a juror in the class for heat, light, and electricity in 

 the Paris Exposition Universelle, 1855, and was then appointed a 

 kniorht of the Legion of Honor. In 1868 he received the honor of 

 knighthood from Queen Victoria, and the same year was awarded the 

 Copley medal by the Royal Society for his researches in acoustics, 

 optics, electricity, and magnetism. He was made LL. D. by Edin- 

 burgh University in 1869. In 1873 he was elected a corresponding 

 member of the Paris Academic des Sciences, in the place of Baron 

 Liebio-, deceased. He was also a member of the chief scientific asso- 

 ciations and academies of Europe. 



Prof Wheatstone was married in 1845, His death took place at 

 Paris, on the 19th of October, 1875. He left a numerous family. 



In a brief memoir published in the Academy, Mr. C. Tomlin- 

 son, who was an intimate friend of Wheatstone, states that the latter 

 never obtained eminence either as a writer or as a lecturer : before a 

 large audience he was nervous and hesitating, but in familiar conver- 

 sation his ideas " would flow so pleasantly and so lucidly, that one 

 could not help reflecting that, if all this had been put into a lecture, 

 Wheatstone might have become a successful rival even of Faraday." 

 On such occasions he spoke unreservedly of the scientific work in 

 which he happened to be engaged, and in this way other men often 

 pilfered his ideas, and took the credit to themselves. On one occa- 

 sion at least, Wheatstone recognized his error, for he paid ten guineas 

 for a piece of apparatus for the purpose of stopping the inventor's 

 mouth, said " inventor " having derived the idea of it from Wheat- 

 stone himself. 



