x v i L I S T O F T E X T S 219. To Arnold Sommerfeld, 18 December 1919 220. From Robert W. Lawson, 18 December 1919 221. From Peter Debye, 19 December 1919 222. From Moritz Schlick, 19 December 1919 223. To Alfred Wolfer, 20 December 1919 224. From Paul Ehrenfest, 20 December 1919 225. From David Hilbert, 20 December 1919 226. To Richard von Mises, 21 December 1919 227. From Richard Fleischer, 21 December 1919 228. From Robert W. Lawson, 21 December 1919 Not selected for translation 229. From Hendrik A. Lorentz, 21 December 1919 230. From Carl Seelig, 21 December 1919 231. To Heinrich Teweles, 23 December 1919 232. From Leonhard Grebe and Albert Bachem, 23 December 1919 233. To Heinrich Zangger, 24 December 1919 234. To Robert W. Lawson, 26 December 1919 235. To Edgar Meyer, after 28 December 1919 236. To Ludwig Darmstaedter, 29 December 1919 237. To Carl Seelig, 29 December 1919 238. From Richard Fleischer, 29 December 1919 239. From Paul Ehrenfest, 30 December 1919 240. From Erwin Freundlich, January 1920 Not selected for translation 241. From Hedwig Kohn, 2 January 1920 Not selected for translation 242. To Heinrich Zangger, 3 January 1920 243. From Charles-Eugène Guye, 3 January 1920 Not selected for translation 244. To Ilse Schneider, 5 January 1920 245. To Michele Besso, 6 January 1920 246. To Hellmut von Gerlach, 6 January 1920 247. To Edgar Meyer, 6 January 1920 248. To Emil Zürcher, 6 January 1920 249. From Robert W. Lawson, 8 January 1920