DOC. 42
SPECIAL
AND GENERAL RELATIVITY
539
[96]In
the thirteenth edition "v"
in
the denominator
was
replaced
by
"v0."
[97]In the thirteenth edition
"sogennanten"
was
added after
"der," and in
the fourteenth edi-
tion "ebenso Perot auf Grund
eigener Beobachtungen,"
was
added after
"Cyanbande."
[98]In the fourteenth edition
"W. H.
Julius und"
was
added after "insbesondere."
[99]In
the fourteenth edition after "Ansicht" the
following
text
was
added: "bzw.
von
der
Beweiskraft des
bisherigen empirischen
Materials
nicht
überzeugt."
[100]See
Earman and
Glymour
1980b and Hentschel 1993,
1994
for historical discussions
of
the
problem
of the observation of
gravitational
redshift.
[101]Freundlich 1919a.
[102]This
appendix
first
appeared in
the fourteenth
English
edition
(Einstein 1946)
and sub-
sequently
in
the sixteenth German edition.
[103]See
Einstein 1917b
(Doc. 43)
for the
first
occurrence
of the
cosmological term.
For
a
historical discussion of this
point
and
of
the
developments
sketched
in
the remainder of this
appendix,
see
North
1965.
[104]Appendix
5
was
added
to
the sixteenth edition.
See
the editorial
note,
"Einstein's
Pop-
ular Book
on
Relativity," pp. 417-419,
for
more
background.