522 INDEX. 



Henry, the mother of — 54 



Henry, — obsequies of 11 



Henry,— parentage and date of birth of 64,177,427,442 



Henri s administration of the Smithsonian institution 274,409,435 



Henry's a'Stlietic perceptions . — 190,333,437,471 



Henry's character 73,191,801,403 



Henry's earlj electro-magnet . 64,131,218,444,483 



Henry's first attraction to books - — 54,178 



Henry's first introduction to scientific literature 55, 167, 180,207,428, 1 1 



Henry's personal appearance 189 



Henry's researches on the radiation oi sound 346,405,500 



Henry's scientific papers,— list of 365 



Henry's scientific work 83 209,476 



Heliostat of simple form arranged by Henry 267 



Hodge, Rev. Charles,— death of, referred to by I >r. Parker - 33 



Hodge, Bev. Charles, prayer by, at the funeral services of Joseph Henry .. - 13 



Humphreys, Gen. Andrew A., a pall-bearer at the funeral of Joseph Henry 11 



Hydrometric experiment by Henry, on the separation of liquids 328 



Illuminants,— investigation of, by Henry. 309,313 121 102 



" [mponderables, " — theory of, controverted by Henry 322 



Increase of the Smithson fund during Henry's administration 48 



Index to scientific literature proposed by Henry 296 



Index to scientific literature undertaken and published by the Royal Society of 



London 297 



Induction, electrical, of successive orders, discovered by Henry 85,248,494 



Induction, initial and terminal, investigated I 



Information,- - Henry's wide range of 332,437,471 



Intensity and quantity galvanic battery contrived by Henry 239 



" Intensity" and "quantity" galvanic currents considered 370 



Intensity and quantity magnets and batteries B4 226, I 



"Intensity" electro-magnet first produced by Henry 223,227, !i~ 



International exchanges of scientific publications established by Henry 298 



Jenkin, Mr.— observation by, on electric self-induction 240,494 



Jenkin, Prof. F.- remarks of, on the terms " intensity" and "quantity " 377 



Joint resolution of Congress to have engraved ami printed a portrait of Henrj 



lor tin' Memorial Volume 4 



Joule's testimony to Henry's original electro-magnetic engine 2 ;i 



Last days of Joseph Henry 188,460 



Law, the domain of, recognized by Henry 334 



l.i tier from Dr. I.. D. Gale, to Henry, on the telegraph of Prof. Morse 388 



Letter from Col. t'. s. Hamilton, to the Light-House Board, on the success of 



their experiments 424 



Letter from Henry to Rev. S. R. Dod 149 



Letter from Henry to Prof. S. F. B. Morse — - 3S4 



I., tter from Henry to Dr. E. Nott 409 



Letter from Henry to Mr. J. Patterson '23 



Letter of condolence from the Trinity House. London 1:17 



Letter of Prof James Hall, on the death of Henry 129 



Library scheme,— struggles of. lor control of the Smithson endowment 281,410,457 



Light-House Board of England,— memorial from 1.17 



Light-House Board of France,— testimonial from 308 



Light-House Board of the United States,— Henry, chairman of- 69,133 314, 163 



Light-House Board of the United state-.— memorial proceedings of, on the death 



of Henry 135 



Light-House establishment,— services of Henry to 70,315,464,502 



