1002
CALENDAR
1916
March 20 "The Foundation
of
the General
Theory
of
Relativity"
(Vol.
6,
Doc.
30).
An
unpublished "Appendix" supplies
his
"Formulation
of
the
Theory on
the Basis
of
a
Variational
Principle"
(Vol. 6,
Doc.
31).
March 23 Lectures "Über
einige
anschauliche
Überlegungen
aus
dem
Gebiete der Relativitätstheorie" to
the
physical-
mathematical class
of
the
PAW.
Provenance:
Preußische
Akademie
der
Wissenschaften. Sitzungsberichte
(1916):
423.
April
6
Begins 3-week vacation in Switzerland.
May
5
Succeeds Fritz
Haber
as
Chairman
of
the DPG. Provenance:
Deutsche
Physikalische Gesellschaft. Verhandlungen
18
(15 May 1916), no.
9,
p.
234.
May
19
Eulogizes
Karl Schwarzschild. Provenance: Deutsche
Physikalische
Gesellschaft. Verhandlungen
18
(30
May
1916),
no. 10,
p.
261.
June Friedrich
Kraus,
Professor
of
Physiology,
head
of
the
Department
of
Internal
Medicine,
and
Georg
Nicolai’s
supe-
rior at the Charité
hospital
in Berlin writes to Einstein to
explain
that while Nicolai’s dismissal from the Charité
could
not
be
avoided,
Nicolai should
try
to
retain the venia
legendi.
Provenance: letter
of
Kraus to
Nicolai,
before 30
June
1916,
excerpted
in
Zuelzer 1981,
pp.
180-181.
June
2
Delivers
two
lectures
to
the DPG
on
a
thermodynamic
deri-
vation
of
photochemical equivalence
law and
on an
elemen-
tary explanation
of
water
waves
and
of
flight.
Provenance:
Deutsche
Physikalische Gesellschaft. Verhandlungen
18
(30
June
1916),
nos.
11-12,
p.
297.
June
21
At Rubens’s
Wednesday colloquium
reviews Gans’s
theory
of
diamagnetism
and
paramagnetism.
Provenance:
entry
of
this date in Walter
Schottky Agenda
1916,
GyMDM,
Schottky
Nachlaß.
June 22 Presents his
"Approximative Integration
of the
Field
Equa-
tions
of
Gravitation"
(Vol. 6,
Doc.
32)
to the
physical-math-
ematical class
of
the
PAW.
June 23 Commemorates the death
of
Ernst Dorn. Provenance:
Deutsche
Physikalische
Gesellschaft. Verhandlungen
18 (30
July 1916),
nos.
13-14,
p.
315.
June
29
Eulogizes
Karl
Schwarzschild
at
a
public
session
of
the
Academy (Vol. 6,
Doc.
33).