8 6 8 C A L E N D A R O F A B S T R A C T S O C T O B E R 1 9 2 8 694. From Constantin Carathéodory Munich, 16 October 1928 Opposes the letter that D. Hilbert planned to send Luitzen Brouwer (Doc. 282), but is also of the opinion that Brouwer cannot remain on the editorial board of Mathematische Annalen. Wrote Hilbert with offer to intercede by way of a letter to Brouwer, urging him to consider resigning from the board, while expressing thanks for his outstanding work and editorial contributions. ALS. [13 145]. 695. From Israel Malkin Charlottenburg, 16 October 1928 Encouraged by AE’s earlier favor (Abs. 233), requests recommendation for the position of qualified high school teacher at the municipal Gauss school. Refers to his papers pub- lished in Mathematische Annalen, his teaching success at the Technical University, etc. TLS. [47 581]. 696. From Georg Count von Arco Berlin, 17 October 1928 Even though Siemens is interested in inventions in the field of telecommunication, has a department for medical cases, among them diathermal devices. Proposes that Bruno Mendel visit him. Is delighted by the two short papers AE sent him. Recommends that AE visit Siemens to see the experiments with biological radiation, a continuation of those of the Russian Prof. L. Gurwitsch. Doc. 285 is written at the bottom of page 2. TLS. [88 177]. 697. From Leon Steinig [Geneva,] 17 October 1928 Requests permission to visit AE on 25 October and a recommendation for the position of paid official at the International Labour Office. ALS. [48 501]. 698. From Verein zur Gründung und Erhaltung einer Akademie für die Wissenschaft des Judentums Berlin, 17 October 1928 Requests AE’s opinion on invitation of Chaim Eitington, a businessman expected to give a donation to the Academy, as nonlocal member of the administrative board. The Leipzig rabbinate gave a glowing opinion on him. TLS. [48 803]. 699. Presentation of the manuscript of Weitzenböck 1928 to PAW  [Berlin,] 18 October 1928 Notes that the theory of distant parallelism was earlier developed by R. Weitzenböck and other mathematicians. In comparison to these theories, the Einstein theory differs solely with regard to the supplementary “rotation invariance.” The general formation rule for the invariants of the Einstein theory is then immediately derived, and the variation on the Hamilton integrals of the simplest such invariants is carried out. At the end, it is shown that one can establish displacement laws in a four-dimensional space that can be expressed in tensors of fewer than ten independent components. PD. Preußische Akademie der Wissenschaften (Berlin). Sitzungsberichte (1928): 449. 700. From Richard Linsert [before 19 October 1928] Requests a statement by AE opposing the drastic punishment of up to ten years incar- ceration of men engaging in certain homosexual acts (see AE’s statement, Einstein 1929h [Doc. 287]). PL. [97 478]. 701. To (Ludwig?) Bendix [Berlin,] 19 October 1928 Cannot make clear sense of Bendix’s epistemological study, therefore cannot form an opinion. TLC. [45 523]. 702. To Paul Plaut Berlin, 19 October 1928 In reply to Doc. 283, encloses response to the questionnaire (see Doc. 288). TLS. [97 473]. 703. To Leon Steinig [Berlin,] 19 October 1928 In reply to Abs. 697, the Labour Office knows Steinig better than he does an opinion would be ridiculous. Steinig should decide whether a visit is necessary. TLC. [48 502].