4 7 2 C A L E N D A R 1 9 2 1
royalty payment of 900 M has already been transferred.
[41 1000].
TLS from Karl Kumpmann. Invites to lecture for the Aca-
demic Courses for Continuing General Education and Eco-
nomic Sciences, Düsseldorf. [43 595].
TLS from Methuen to IE. Intends to publish Lorentz et al.
1920 in English and solicits permission to publish AE’s
papers in it. [67 974].
ALS from Maurice Solovine. Lacking money, he has to
postpone his trip to the U.S. As to the French translation of
the Princeton lectures, he can turn to mathematicians for
advice when needed. Promises to send AE the translation so
he could check for errors. [21 153].
Sep 22 TLS from Jander, Ministry of Education. Requests the
names of the two observers who had complained to AE
about the planned appointments at the Astrophysical Obser-
vatory, Potsdam (see Doc. 221).
Sep 25 TLS from Federigo Enriques. Thanks for AE’s (nonextant)
letter that informs him that AE will arrive on 20 Oct. The
lectures will be held on 22, 24, and 26 Oct. He suggests hav-
ing a small discussion for specialists after the lectures. On
28 Oct, AE would leave for Florence and stay there on 29
and 30 Oct. Invites AE to his home for the evening of
20 Oct. [9 232].
Sep 26 ALS from Davis Erdtracht. Thanks AE for granting Renais-
sance the Polish language rights to Einstein 1920j. Requests
AE’s permission to acquire the Polish rights to Einstein
1921c from Springer, and informs him that they have
acquired the Hebrew and Yiddish rights to Einstein 1917a
from Vieweg. Offers royalty of 15%. [41 1017].
In his home, meets with Kôshin Murobuse and discusses his
visit to Japan.
Sep 29 TLS from W. S. Davenport. The circumference of the rotat-
ing solid disk will not be found larger than that of a disk at
rest, because both the circumference and the measuring rod
will shorten in the same way, so the value of will not
change. Supposing, however, that would change and it
could be measured, then it will not grow larger, as AE main-