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Data are presented on the energy and angle dependence of the charge-symmetry superratio R and simple ratios r I and r2 for~-elastic scattering from H and He. r i and r2 were normalized with respect to~+ d and m d elastic scattering, which is assumed to have the ratio 1.0. The beam energies are T =142, 180, and 220 MeV, and the scattering angle, |9L, ranges from 40' to 110. In all cases measured it is found that R ) 1, r', =1, and r2) 1. These results provide substantial evidence for charge-symmetry violation. The angular distributions for a -H and m -He elastic scattering also have been measured and comparisons are made with various model calculations. R:cr(0)[sr+ H]o'(0)[tr 3H]/cr(0)[n He]o'(8)[sr+ He], r', =o(0)[~+ 'H]cr(0)[vr d]/o(0)[m. 'He]cr(0)[vr+d], r'2 =o{0)[n H]cr(0)[m+d]/o. (0)[m+ 3He]cr(0)[vr d].

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