C A L E N D A R O F A B S T R A C T S J U N E 1 9 2 8 8 5 7 is difficult but, as AE remarked in Davos, the more difficulty we attribute to a problem, the more attractive it is. ALS. [47 425]. 583. To Assoziation Russischer Physiker [Berlin,] 4 June 1928 Thanks for the invitation to Moscow, but cannot accept because of a serious heart con- dition. TLC. [48 214]. 584. To William J. Brittain [Berlin,] 4 June 1928 Cannot fulfill Brittain’s request because too much has been written about him in the newspapers. TLC. [45 659]. 585. To Ernst Humanik [Berlin,] 4 June 1928 It is impossible to produce work from cogwheels, rods, etc. To ponder on such hopeless tasks has brought many people to disaster. TLC. [46 753]. 586. To H. Köllisch-Björnson [Berlin,] 4 June 1928 Corrects explanation of problems with the working of a machine by calling attention to torques of components that compensate for the main torque. TLC. [25 135]. 587. From Arthur Korn Charlottenburg, 5 June 1928 The question of international synchronization of telegraphy, proposed to AE in Vol. 15, Abs. 452, was raised at the Congress for Wireless Telegraphy in Washington but was not taken up on its agenda. To further it, proposes either to use the ICIC, or to join forces with other countries, eminently with France. Asks that it be raised again at ICIC. TLS. [47 291]. 588. To Arthur Korn Berlin, 7 June 1928 In reply to Abs. 587, cannot attend the session of the steering committee of ICIC because of his cardiac problems. Advises him to reach out to H. A. Krüss, his representative there. TLSX. [44 193]. 589. To Gustav Plath [Berlin,] 7 June 1928 Plath’s exposition is too obscure, and he apparently does not even understand what a di- mension is. TLC. [48 009]. 590. To Karl Scheel [Berlin,] 7 June 1928 Forwards a manuscript by his physician Ehrmann that he received for review, but it was meant for Scheel. Is convinced it is nonsense and proposes to reject it. Scheel had ac- cepted G. Maneff’s manuscript. It would bring shame on the Zeitschrift für Physik. Would have been better to ask for the opinion of a theoretician. TLC. [21 479]. 591. From Bund freier sozialistischer Jugend Berlin, 7 June 1928 Requests money for sending delegates to the International Peace Conference, Warsaw. TLS. [45 713]. 592. From André Metz Sceaux, 10 June 1928 Forwards Frédéric Lefèvre’s invitation for an interview, part of a series “An Hour with …” Is interested in present trends in AE’s investigations. ALS. [18 261]. 593. From Max Planck Grunewald, 10 June 1928 Received AE’s (nonextant) letter. Will present MS of Einstein 1928o (Doc. 219) at Academy session of 14 June (see Doc. 218). Congratulates him and asks whether he can visit on 13 June to discuss details. AKS. [19 332]. 594. From Walther Meißner [Berlin,] 11 June 1928 In reply to Doc. 214, informs he has just received state diagrams of helium and hydrogen from Leyden. After examining them, and those for nitrogen, wishes to consult AE. ALS. [17 129]. 595. From Heinrich Zangger [Zurich], 12 June 1928 Has learned that AE has cardiac problems. Time permitting, will visit AE between 22 and 24 June. Eduard again is congested. Would send him to a mountain spa for the holidays. TL. [97 134].