420 INDEX Hilgert, Heinrich, liii n Hirn, Gustave Adolfe (1815-1890), 86-88 Hirsch, Arthur (1866-1948), 362, 363, 364, 367, 368 Hirschmann, Christoph, 347 Hohlraumstrahlung. See Black body radiation Höpfner, Dr.: to Prorector, University of Göt- tingen, 6 May 1902, 281n to Prorector, Uni- versity of Göttingen, 29 March 1901, 281n Huber, Albert, 241 Humboldt, Alexander von (1769-1859), lxii, 291n Hunziker, Jakob (1827-1901), 17n, 28n, 359, 360 Hurwitz, Adolf (1859-1919): AE attempts to secure position as Assistent to, 44, 262, 375 AE's courses with, 212, 362, 363, 364 posi- tion as Assistent divided between Ehrat and Merz, 269n, 379 from AE, 23 September 1900, 263 from AE, 26 September 1900, 264 to Swiss Federal School Council, 15 June 1896, 43 to Hermann Bleuler, 19 Octo- ber 1899, 235n to Hermann Bleuler, 27 July 1900, 247 to Hermann Bleuler, 11 October 1900, 269n Hypnotism, 318-319 Impresa d'Illuminazione Elettrica in Varese, to Mayor of Pavia, 29 November 1897, lii n Imthurneum, Winterthur, 321n Induction, electrostatic. See Electrostatic induc- tion Innere Reibung. See Viscosity Insulators, thermal (Wärmeisolatoren), 76-79 81-83 Integrals, double (Doppelintegrale), 212 Intermolecular forces. See Molecular forces Internal friction (innere Reibung). See Viscosity International Electrical Exhibition, Munich (1882), li n International School of Protestant Families in Milan (Internationale Schule Protestantischer Familien in Mailand, now Scuola Svizzera di Milano), liii n, 389 Ion theory (Ionentheorie), AE's study of, 267 Isola Bella, 261 Isola della Scala, province of Verona, Italy, lv n, 281n, 375 Isothermal change of state. See Gases Israel und Levi, feather-bedding firm, Ulm, 1 n Jegge, Adolf, to Director of Education, Canton of Aargau, 15 December 1896, 53n J. Einstein & Cie., Munich, li n, lii n, liii n "J. Einstein & Comp., München." See J. Ein- stein & Cie., Munich Jebenhausen, Germany, birthplace of Julius Koch, xlix Joule, James Prescott (1818-1889), 84-86, 88- 89, 91-92 Jung, Giuseppe (1845-1926), 282, 285, 287 Justiz- & Polizei Departement der Schweize- rischen Eidgenossenschaft. See Swiss De- partment of Justice Kac, Yugoslavia (formerly Käty, Hungary), MM's family home, xxxvii, 59n, 225n, 228, 268, 321 Kalorische Motoren. See Heat engines Kamerlingh Onnes, Heike (1853-1926), 288- 289 from AE, 12 April 1901, 288-289 Kant, Immanuel (1724-1804), 46, 49, 364 AE reads Kritik der reinen Vernunft at age 13, lxii n Kapazität. See Capacitance Käppeli, Gottlieb: to Hermann Bleuler, 9 Sep- tember 1896, 23n to Rektorat, Kantons- schule, 14 September 1896, 24 Karrer, Victor (1877-?), 219n Katy. See Kac Kaufler, Adolfine, 386 Kaufler, Alma, 273 Kaufler, Helene. See Savic, Helene Kaufler, Ida, 244 Kern, -, 271 Kerne. See Electrons Charge carriers Kiessling. See Ludwig Kiessling u. Cie., Mu- nich Kinetic energy, 92-94, 261 Kinetic energy, internal (latente kinetische Energie der Wärme), AE on connection with electrical resonator energy, 236, 279, 324n Kinetic energy of molecules, AE on parallelism between black body radiation, temperature, and, 236, 294-295 Kinetic theory of gases (kinetische Gastheorie), 294 AE compares Drude's electron theory to, 236, 287 AE's first paper on, 315, 327 AE says hypothetical molecular forces play no role in, 261, 265 Kinetic theory of liquids, 265, 279, 324 Kinetic theory of matter, 279, 287 Kirchhoff, Gustav Robert (1824-1887), xxxix, 187, 250-251, 293 Kirchhoff's laws, 181-184