(Equation (6) should then be omitted.) There will be an additional two-body contribution to the superfluid-state energy expectation value, but from all indications this contribution is small. For one thing, it is of higher order in the (~ smallness parameter ~ : ~ lf[]2(r)-1] dr] of the cluster expansion. Figure 1 is to be replaced by the Figure given here. The caption remains unchanged, the labels 1), 2), 3), 4) referring to Ohmura potentials with hard-core radii e : 0.0, 0.2, 0.4 and 0.6 fm, respectively. These potentials, incidentally, are the ones which produce the values r s ~ 2.7 fm for the singlet effective range. The concluding sentences, beginning with (~ In the equation for e~ we set ... ~ should then be restated as follows: ... In the equations for ek and 2 we set A h : 0 ; thus, e~ is given by the usual normal-state Hartree-Fock expression (for which we found an effective-mass representation to be adequate) and 2 becomes simply e~ (14). The gap equation was solved by a self-consistency technique which will be described in detail elsewherc; suffice it to say that the procedure adopted--~hich, of course, leads to an isotropie gap function is suitably accurate except possibly at the highest densities. I t is to be emphasized that both /~ and m* (effective mass) are kF-dependent. At a given e, t~ Serber ~ and S-wave results for A~ F vs. k F are basically the same, the former curve being slightly higher than the latter, by an amount which increases with density. Only the S-wave results--which are susceptible to (generally agreeable) comparison with results of earlier calculations--are plotted. I t is seen that as the core radius increases, the maximum value of /l~ r decreases and the gap closes at lower kF, as would be expected physically. The maximum Ak F of symmetrical nuclear matter