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Electrical researches ol Henrj al Princeton ... 23 



Electrical self-induction in :i long wire discovered by Henry . . . W7.493 



Eleoti i ■ raph, Barlow's experiments on .. _. 



Electric Telegraph, Morse's experiments on 59,3S2,488 



Electro-magnet first made by Sturgeon 58,82,213 



Electro-magnet greatl} developed by Henrj . . 84,111,131,218,4-14 



Eleotro-magnel ol intensity, first produced by Henrj . 223,227,488 



i cetro-magnetie action developed by Ampere 81,213,215,477 



Electro-magnetic chronograph invented by Henry l.v>. 272, 398, ) t8 



Electro-magnetic engine invented by Henry L43 230,445 



Electro-magnetic influence discovered by Romagnosi and Oersted i 



[ro-magnetic telegraph first devised by Henry. „ -85,131,149,228,350,487 



Electro-magnetic telegraph first suggested by Ampere 223 



Elevations, topographical, ol the State of New Voi k tabulated by Henrj 27", 1 14- 



Engineering survey in New York State, by Henry 57,183,210,428 



Engine operated bj electro-magnetism, the first -. 143,230,445 



Eulogy bj Henry, ol A. Dallas Bache 



Europe,— Henry's first visit to, in 1837 04,244 



Europe, — Henry's second visit to, in 1870 



I si bangi - of scientific publications, established by Henry 



Executive Committee of the Board of Regents, directed to make arrangements 



f<>r a public commenn nation . 1,28 



Expansion of iron by magnetization, — experiments on 329 



Experiment by Henry on the static rectification of alcohol 328 



Experiments of Henry on the strength of building-stone . 



"Extra current'' in a long electric wire, discovered by Henry 237,239, 194,44 



Fara-lay and Henry compared 604 



Faraday, — employment by, of Henry's multiple-coil magnet 222,23 



Faraday, — production of electro-magnetic rotation by 81, 479 



Faraday's regard for Henry . .. 64,; 



Field, Cyrus W.,— Telegrams to, from London companies, road at the Memorial 



Services.. 76 



Finances ol the Smithsonian Institution, — flourishing condition of .. 48 



Financial ability and accuracy of Henry 46,97 



Fine-arts, — fine appreciation of, by Henry .191,333,437,471 



Fire at the Smithsonian Institution in 1865,— loss of papers by_ 3i ' I 9 



Fluidity,— experiments on, by Henry 423, 498 



I i ig-signaling instruments,— experiments on, by Henry 310 



Fog-signals greatly improved by Henry 311,403 199 



Forces of nature as motive powers, classified by Henry 273 



i ;asts of the weather inaugurated by Henry 287. 163 



Four elements of the ancients, typical of the fourfold state of matter _ 266 



Fourfold state ol matter postulated 266 



Franklin and Henry compared 4(17,411-, 433 



Franklin's successor in Henry 70,83,93,170,444 



Fresnel, Augustin, — experiments by, in 1820, to obtain magneto-electricity 233 



Fresnel, L. secretary of the Light-House Board "i France),— testimony of, to 



tin- activity «>f the United Stairs Light-House Board 308 



Fund- of the Smithsonian Institution,— flourishing condition of 4* 



Funeral of Joseph Henry _ 11 



Funeral Sermon by Rev, Samuel S. Mitchell 15 



Funi ral services at the New York Avenue Presbyterian Church of Washington- 12 



Gale, Dr. L. I'., assistant to Professor Morse in his early experiments on the 



electric telegraph 59, 150 



Gale, Dr. I. D -letter from, to Henry,on the telegraph of Morse . 388 



Gale, Dr I.. D.- successful application by, of Henry's discoveries, to the tele- 

 graph Of Morse _____ 59, 150.38 ■ 188 



