Abstract We would like to point out first of all that the seven recent publications of Voyutskil were not “ignored” by us but were simply unavailable to us at the time our review was written. We have now had the opportunity of reading all but one of his recent contributions but see no reason to change our original viewpoint. In Voyutskii˘'s cited references, and particularly in his own works, he has emphasized the role of diffusion in adhesion. His viewpoint has been conditioned by his notion that adsorption values are inconsistent with high peeling work, and cannot account for peel adhesion rate dependence, and the strong adhesion of nonpolar polymers. We would fully agree that diffusion often plays a role in adhesion, certainly in autohesion and probably in other cases of polymer bonding as well when the polymers are not too dissimilar. The effect of mutual solubility in promoting strong adhesion has been a long accepted principle. The suggestion of it is inherent in the article on tackiness by Josefowitz and Mark and it had grown in acceptance sufficiently by 1947 to be clearly stated in an encyclopedia article on adhesion by one of us. But to regard this mechanism as dominant in such cases as adhesion of NBR to cellophane seems unjustified.