By the method of classical potential theory, we obtain the integral representation of the two-parameter operator semigroup that describes the inhomogeneous Feller process on a closed interval [ r(1),r(2)] that is a result of pasting together two diffusion processes given on ( r(1),r(2)) and ( r(1),r(2)), respectively, where - infinity < r(1) < r < r(2) < infinity.