DOCS. 370-372 MARCH
1912 273
370. To
Marian
von
Smoluchowski
Prague, 10
March 1912
Dear
Colleague:
To
my great
joy,
I
learned
from Mr.
Ehrenfest that
you
plan
to
visit
me
during
the
Easter
vacation.[1]
Please
do
carry
out
this fine
plan
of
yours
and
stay
at
my
house
while
you
are
here
in
Prague,
so
that
we can
make
really good use
of
the time. I
already
learned
in
Bern that
you
once
wanted
to
look
me up
there
at
the Patent
Office;[2]
I
was
extremely sorry
that,
as
bad
luck would have
it,
I
was
away
just
then.
As
for the
time
of
your
visit, I
would
only
like
to
ask
you
not to
come
right
at
the
end
of the
holidays
because
I
will have
to
spend
the last
week of vacation
in
Berlin.[3]
With
cordial
regards, your
very
devoted
A.
Einstein
371. To
Wilhelm
Wien
Prague, 11
March 1912
Highly
esteemed
Prof. Wien:
I
asked
you
this
morning
to
return
my manuscript,[1]
and
now
I
am
asking you
to
keep
it
after
all.
To
be
sure,
not
everything
in the
paper
is tenable.[2]
But
I
think
I
should let the
thing
stand
as
it
is,
so
that those interested
in
the
problem
can see
how
I
arrived
at
the
formulas. This
gravitation problem
is
extremely
interesting,
and
even
though
so
few facts
are
available,
it
seems
that there
is
only
a
single
feasible
path. I
am
now
almost finished
with the static
field[3]
and
am now going
to
try
to
discover
the
laws
of
the
dynamic
field. But
the
thing
is
not
as simple as
Abraham
thinks.[4]
In
particular,
the
principle
of the
constancy
of
c
and,
with
it,
the
equivalence
of the
4
dimensions
are
lost.
With
best
regards,
yours
respectfully,
A.
Einstein
372.
From Walter
König[1]
Giessen,
11
March 1912
Very
esteemed
Colleague:
The
publisher
Mr.
Enke[2] just
sent
me a
postcard
from
Mr. Eichhorn[3] in which he
is
asked
to
draw
the attention of the editor of Drude's
Physik
des Aethers
to
an
incorrect
description
in Drude which
you
have
criticized.[4]
Would
you
be
so
kind
as
to
tell
me
what
your
criticism is?
I
found
many things
in Drude
that
I did not
consider
quite