3 4 8 I N D E X Hertzsprung, Ejnar (1873–1967): 95, 128, 251, 311 on trying to arrange that Eddington meet AE, 106 Herzen, Alexander, 253 Herzfeld, Karl (1892–1978), 269 Hilbert, David (1862–1943): 333 invites AE to join editorial board of Mathematische An- nalen, 192 method of integral equations, 29 on keeping Debye in Göttingen, 192 on the- oretical physics at University of Göttingen, 283, 286 regrets rejecting offer from Univer- sity of Bern, 286 requests AE’s opinion on Born, 265–266, Stern, 286 visits in Switzer- land, 48 Hochberger, Auguste (1867–1936): 66, 76, 119 offers condolences on Pauline Einstein’s death, 270 visits Pauline Einstein, 82, 99 Hochdorf, Max (1880–1948), 18 Hochheim, Ernst (1876–?), 103 Hochschule für Proletarier, AE on, 181 Hoff, Jacobus H. van ’t (1852–1911), 311 Hofmannsthal, Hugo von (1874–1929), 239, 240 Holder, Roland: 38 on Hans Albert Einstein, 43 Holst, Helge (1871–1944): paper by, 211 Schlick on paper by, 329 Holtzmann, Robert (1873–1946), 59 Hopf, Ludwig (1884–1939), 247 Hort, Wilhelm (1878–1938), 150 Huber, Frieda (1880–?): 71, 72, 83, 98 arrives in Berlin, 204 Humboldt, Alexander von (1769–1859), 294 Humboldt, Wilhelm von (1767–1835), 294 Hunger, in Russia, 120 Hurwitz, Adolf (1859–1919), 164 Hurwitz, Eva (1896–1942), 144 Hurwitz, Ida (1864–1951), 144 Huygens, Christiaan (1629–1695), 311 Idealistic positivism, of Vaihinger, 24 Inertia, relativity of, 62–63, 148 Institut international de physique, 65 Institut Pasteur, 202 Institute of Radium Research, Vienna, Lawson’s wartime work at, 267 Intellectuals, past and current, AE on, 159 International reconciliation: AE’s doubts on, 73– 74 through personal contacts, AE on, 74, 317 Internationalism, and Jewishness, AE on, 105 Invariance of electron orbits, in Weyl’s theory, 63 Ion mobility, 283 Iring, G., 113 Jaffé, George (1880–1965), 210 Jäger, Gustav (1865–1938), 243–244, 260 Jahnke, Eugen, 187 Janke, Johannes (1884–1969), 18 Japanese Navy: acquires German submarines, 141 employs German navy officers, 141 Jewish students, Eastern European, 264–265 Jews: AE on, 10 Eastern European, 116, 136, 212 intermarriage with Gentiles, AE on, 179 ostracized from Germany, 145. See also AL- BERT EINSTEIN: JEWISH MATTERS Joffe, Abram F. (1880–1960), 253 Johannsen, Wilhelm (1857–1927), 314 Johnsen, Arrien (1877–1934): 40–41 asks AE for recommendations for successor to Weber, 41 proposes Schlick to professorship at Uni- versity of Kiel, 41 asks AE for recommenda- tions for Becker, Gans, Harms, Koch, Madelung, Valentiner, Weber, Zahn, 41 Jong van Beek en Donk, Benjamin de (1881– 1948): 137 and Lille booklet, 138 Joseph, Dr., 108 Julius, Willem H. (1860–1925): 81, 149, 290, 307 on anomalous dispersion as cause of redshift, 149, 162, 174, AE on, 164 Kaiser-Wilhelm-Institut of Physics (KWIP): call for research proposals, 40 Mie inquires about research funds, 55 report for 1918 requested, 9. See also Freundlich, Erwin APPLICATIONS FOR FUNDING: by Born, 137 Stern, 137 in quantum theory of mona- tomic gases, 11 for spectroscopic mea- surements (redshift), 21 FUNDING AWARDED FOR: mathematical cal- culations, 57 Kaluza, Theodor (1885–1954): 41 five-dimen- sional unified field theory of, 21, 26, 32–33, 36–37 Kamerlingh Onnes, Heike (1853–1926): 32, 84, 149, 219, 252, 282, 290, 307 helps AE get Dutch visa, 106–107, 297, 311, 314 low tem- perature physics, discussion with AE, 194, 219, 255 on special professorship for AE at University of Leyden, 81, 173, 254–255, 311 Kammerer, Paul (1880–1926): 276, 278, 313 on