Ahatract-An analysis is made of the boundary layer flow of Reiner-Philippoff fluids. This work is an extension of a previous analysis by Hansen and Na [A. G. Hansen and T. Y. Na, Similarity solutions of laminar, incompressible boundary layer equations of non-Newtonian fluids. ASME 67-WA/FE-2 presented at the ASME Winter Annual Meeting, November (1967)], where the existence of similar solutions ...