SY]^OPSIS. 



I. 



Page. 



Early Career: 1814—1826 206 



Communications to the Albany Institute : 1824, 1825 208 



State Appointment as a Civil Engineer : 1825 210 



Professorship of Mathematics at the Albany Academy: 1826 211 



Electrical Kesearches at Albany : 1827 — 1832 212 



Great development of the "Quantity" Magnet: 1828 — 1831 216 



The first "Intensity" Magnet: 1829 — 1831 223 



The first Magnetic Telegraph : 1830, 1831 228 



The first Electro-magnei ic Engine : 1831 . . '230 



Discovery of Magneto-Electricity : 1831, 1832 233 



Discovery of the " Extra Current :" 1832 237 



Professorship of Natural Philosophy at Princeton : 1832 238 



Electrical Researches at Princeton: 1833 — 1842 238 



Electrical Self-induction : 1832 — 1835 239 



Combination of Circuits : 1835, 1836 243 



Visit to Europe: 1837 244 



Discovery of Successive Orders of Electrical Induction : 1838 248 



Oscillation of Electrical Discharge : 1842 255 



Investigations in General Physics: 1830 — 1846 257 



Meteorology: 1830 — 1846 258 



Molecular Physics: 1839 — 1846 263 



Light and Heat : 1840 — 1845 267 



Miscellaneous Contributions : 1830 — 1844 270 



11. 



Administration of the Smithsonian Institution : 1846 — 1878 274 



Meteorological Work: 1847 — 1870 286 



Archfcological Work: 1848—1877 290 



Editing of Smithsonian Publications : 1848 — 1877 293 



System of Scientific Exchanges: 1851 — 1878 298 



Astronomical Telegraphy: 1873 — 1878 300 



Official Correspondence: 1850—1878 301 



Loss by Fire: 1865 305 



Second Visit to Europe: 1870 307 



Services in improving the Light-House system : 1852 — 1877 308 



Services to the National Government : 1850 — 1877 316 



Contributions to Science at Washington : 1850 — 1877 319 



Thermal Telescope: 1847, 1848 320 



Views of Education : 1853 323 



Experiments on Building-Stone : 1854 326 



Sulphuric- Acid Barometer : 1856 329 



Range of Information 332 



Theory of Organic Dynamics: 1844 — 1857 335 



Investigations in Acoustics: 1851 — 1877 343 



Personality and Character 360 



List of Scientific Papers : 1828 — 1878 ' 365 



Supplementary Notes : A — N 375 



