D O C U M E N T 1 0 2 D E C E M B E R 1 9 2 7 1 1 7 It proved to be the case that this was due to a peculiar convergence problem, but the sum over the surface of the disk (convergence law) is only conditionally con- vergent, so that the law of momentum conservation is lost. By restoring its validity, one can regain the lost constraint and eliminate the indeterminacy. Now, I have a request of you. As a remembrance of my stay in Germany this year, I would like to publish this work in a German journal, and I believe that the Sitzungsberichte der Berliner Akademie would be a very suitable place for its pub- lication. Would you show me the kindness to submit my modest concoction your- self? I will have the manuscript typed up here in Aachen, but will have time to write in the formulas only during my [Atlantic] crossing (since I will be departing in ten days). Thus, I could send you the manuscript from New York, if you agree.[4] Eight days ago, we had the district meeting of the Physical Society here. The for- eign guests included Ornstein, Fokker, and Burgers.[5] The lectures were of high quality and offered much that was of interest. Please forgive me that I exploit you in such an egoistic manner, but I know of no other solution. Kármán[6] sends his warm greetings. With best regards, yours sincerely, Paul S. Epstein 102. From Mileva Einstein-Marić [Zurich, on or before 10 December 1927][1] Dear Albert, You have so much to do that you don’t like to write, Tete[2] just writes down his “ideas and thoughts,” and he makes no mention of the ongoing events of everyday life, even if they’re important. Yet I would have liked you to know what is happen- ing in general here, and there is nothing else for me to do than to write myself and try to banish my thoughts about this by remembering what you said last year about our writing to each other.[3] I’d like to tell you a few things about Albert.[4] Not long ago a good friend of ours, a director of Escher and Wyss,[5] was in the area on business, and I asked him to go to Dortmund as well and visit Albert, which he did. He told me that Albert is very happy, but very overworked, looks very tired, and has become very thin. That worries me a lot, although it hardly surprised me. I’d like Albert to come home for Christmas so that he would get, even if only for a short time, proper and ample meals. When I just send him money, I’m afraid that it is used for other things. In contrast to Albert, she looks very good, and does hardly anything [6] they eat in