  The field equations of the generalized field theory (GFT) are derived from an
action principle. A comparison between (GFT), M\o ller's tetrad theory of
gravitation (MTT), and general relativity is carried out regarding the
Lagrangian of each theory. The results of solutions of the field equations, of
each theory, are compared in case of spherical symmetry. The differences
between the results are discussed and interpreted.
