DOC.
1
MECHANICS LECTURE NOTES
129
dynamics
and mechanics
by
treating
heat
as
a cyclic
coordinate.
See
Klein,
M.
1972, pp.
63-67,
for
a
historical discussion of
this
approach.
[73]The
material
on [p.
116]
and
[p. 117] (which is
written
on
two
pages
at
the end of the
first notebook) is
an
alternative
to
the discussion that
starts
on
[p.
8].
[74]The
word "relatives"
is
interlineated
in
the
original.
[75]The
preceding five
words
are
interlineated
in
the
original.