D O C U M E N T 6 4 S E P T E M B E R 1 9 2 5 7 3 return it to me before the end of 1926.[6] Tete’s verses gave me great pleasure and seemed really good to me. He has a good head on his shoulders. For him, I am en- closing a little poem that I recently wrote for the witty old banker Fürstenberg, whom we have to thank for wonderful situational jokes.[7] Warm regards to you and Tete from your Albert P.S. The poem is no longer to be found. Instead I will tell one of Fürstenberg’s jokes. He is just entering the sleeping car from Frankfurt to Berlin, where he has a whole compartment with two beds to himself in order to get some peace. An ac- quaintance asks him to relinquish the second bed. He answers: “Gladly, but I need to sleep on this difficult decision for another night.” Another: Mr. X comes to Fürstenberg and says: “Your late friend Y advised me: ‘If you ever need anything, turn with confidence to Fürstenberg.’” Fürstenberg: “So? Y told me: ‘If X hits you up for money, give him the boot!’” 64. From Emil Cohn[1] Freiburg im Breisgau, Lorettostrasse 56, 11 September 1925 Dear Colleague, Please accept my thanks for kindly sending me Miller’s research![2] I was previ- ously aware only of the report in Nature.[3] The original provides more observa- tional material. Nevertheless, I still cannot make up my mind whether to believe it. From the discussion in Nature—which seems absurd to me, since it deals with Stokes’s theory[4] —a comment in Eddington’s article of 6 June made a strong impression on me: the change in the aberration between the Mount Wilson Obser- vatory and at sea level. If such a thing existed, astronomers would certainly have noticed it.[5] Moreover, it struck me how tentatively Miller speaks about the move- ment of the solar system.[6] I believe he would have to be able to say without lengthy calculations whether his observations can be squared with its direction and order of magnitude.[7] Well, in any case, it is again guaranteed that physicists are not running out of work —and one can again believe: that this will become clear, that is something I would like to live long enough to see. With kind regards, yours sincerely, E. Cohn