246 DOC.
41 HAMILTON'S PRINCIPLE
{6}
"(14), (15), (16)"
have been corrected here
to
"(13), (14), (15)."
{7}
"(16)"
has been corrected
to
"(15)."
{8}
"_"
preceding
the factor
1/2
has been corrected here
to
"+".