DOC.
14 EINSTEIN AND
BESSO MANUSCRIPT
455
[p.
45] (Besso)
[212]For
an
outline of the
calculations
on [pp.
45-49],
see
the editorial
note,
"The Einstein-
Besso
Manuscript
on
the Motion of
the
Perihelion of
Mercury," sec.
II.3.
[213]Conditions
"1)"
and
"2)"
express
that
the
calculation
will
be
for
the
special case
of circular
orbits.
[214]The
rest
of
[p.
45]
discusses
how
the
area velocity
and
Newtonian
angular momentum
change
when
there is
a perturbation
of
a
planetary
orbit. These
considerations result in
[eq.
314]
(see
also
[p.
49],
[eq.
326]).