xii LIST OF TEXTS 24. From the Swiss Patent Office, 20 September 1904 25. To Conrad Habicht, 6 March 1905 26. To Conrad Habicht, 6 March 1905 27. To Conrad Habicht, 18 or 25 May 1905 28. To Conrad Habicht, 30 June-22 September 1905 29. To Rudolf Martin, 20 July 1905 30. To Conrad Habicht, 20 July 1905-summer 1915 31. Expert Opinion by Alfred Kleiner and Heinrich Burkhardt on Einstein's Dissertation, 22-23 July 1905 32. To Philipp Lenard, 16 November 1905 33. From Josef Zametzer, 7 January 1906 34. From the Swiss Patent Office, 13 March 1906 35. To the Bern Municipal Gas and Water Works, 23 April 1906 36. To Maurice Solovine, 27 April 1906 37. From Max Laue, 2 June 1906 38. To the Bern Municipal Gas and Water Works, 6 June 1906 39. To Conrad Habicht, 27 July 1906 40. From Wilhelm Röntgen, 18 September 1906 41. To Jost Winteler, 3 November 1906 42. To Helene and Milivoj Savic, December 1906? 43. To Alfred Schnauder, 5 January-11 May 1907 44. To Jost Winteler, 7 February 1907 45. To Johannes Stark, 13 April 1907 46. To the Department of Education, Canton of Bern, 17 June 1907 47. From Max Planck, 6 July 1907 Editorial Note: Einstein's "Maschinchen" for the Measurement of Small Quantities of Electricity 48. To Conrad and Paul Habicht, 15 July 1907 Editorial Note: Einstein on Superluminal Signal Velocities 49. To Wilhelm Wien, 23 July 1907 50. To Wilhelm Wien, 25 July 1907 51. To Wilhelm Wien, 29 July 1907 52. To Wilhelm Wien, 7 August 1907