9 3 8 C A L E N D A R O F A B S T R A C T S 1 9 2 6 613. From Georges Oprescu Geneva, 25 October 1926 Regrets that neither AE nor Krüss can attend the meeting in Paris. TLS. [34 939]. 614. From Rudolf Lämmel Rome, 27 October 1926 Has today examined the questionable parts of the Galileo trial documents. There is no forgery, no palimpsest. He is now pursuing the issue of subsequent insertions of entire pages. AKSX. [15 015.1]. 615. To Wolfgang Otto [Berlin,] 28 October 1926 Sends Paul Langevin’s letter (Doc. 386) that the secretary forgot to attach to Doc. 393. Re- peats Friedrich S. Archenhold’s request for a paper on the gyrocompass (Abs. 595). Asks for the tests with the gyro transmission. ALS (GyKiRA, Gruppe I, Mappe 1186). Lohmeier and Schell 2005, pp. 217–218. [80 660]. 616. From Samuel J. Barnett Pasadena, CA, 28 October 1926 Reminds of his work on magnetization in 1914–1915 and AE’s mention of it in Einstein and De Haas 1915d. Regrets that his priority has not been recognized, and that only the De Haas-Einstein effect (Einstein and De Haas 1915a) is remembered. Requests AE’s public acknowledgment of his priority. Is sorry that AE will not visit Caltech. ALS. [43 185]. 617. From Verein zur Gründung & Erhaltung einer Akademie für die Wissenschaft des Judentums Berlin, 28 October 1926 Acknowledges receipt of check from Kasimir Bett (see Abs. 594). TLS. [45 270]. 618. From Friedrich S. Archenhold Berlin-Treptow, 29 October 1926 Was very pleased with Doc. 394. Invites AE to opening of Mars exhibition on 7 Novem- ber. Sends copy of Robert von Mayer’s letter of 23 April 1869 to Toepfer ([43 072]). TLS. [43 071]. 619. To Associazone Elettrotecnica Italiana (Commissione per i Congressi Scientifici) Berlin, 30 October 1926 In response to Abs. 544, regrets being unable to attend the Volta celebration, since he is overloaded with other commitments. TLC. [45 184]. 620. To the Prague Urania Berlin, 30 October 1926 He is unfortunately unable to fulfill all the requests that come his way, and despite the fact that his time in Prague constitutes one of his most beautiful memories, has to decline Abs. 593. TLC. [45 167]. An ADftS, [45 166], is written at the bottom of Abs. 593. 621. From Gerhard Kowalewski Dresden, 30 October 1926 Is moving to the Technische Hochschule in Vienna and wishes to propose Theodor Kalu- za on his list of successors. Requests a letter of recommendation because there are not many who can help Kaluza. ALS. [14 342]. 622. From Heinrich Löwy Berlin, 30 October 1926 Requests AE’s referee report on his proposal for the determination of oil deposits in arid environments. Asks that AE keep the details secret, but that he document the originality of the proposal, and the fact that it is different from that of Ambronn 1926, a copy of which he encloses. ALS. [47 534].