  I discuss Albert Einstein's 1916 General Theory of Relativity. I show that in
Einstein's 1916 review paper, "the Foundation of the General Theory of
Relativity", he derived his November 25, 1915 field equations with an
additional term on the right hand side involving the trace of the
energy-momentum tensor (he posed the condition square root -g=1) using the
equations he presented on November 4, 1915. Series of papers: Final paper.
