Free Energies and Critical Exponents of the A1(1) Bn(1) Cn(1) and Dn(1) Face Models.

We obtain the free energies and critical exponents of models associated with elliptic solutions of the star-triangle relation and reflection equation. The models considered are related to the affine Lie algebras A 1 (1) , B n (1) , C n (1) and D n (1) . The bulk and surface specific heat exponents are seen to satisfy the scaling relation 2α s = α b + 2. It follows from scaling relations that in regime III the correlation length exponent ν is given by ν = (l + g)/2g, where l is the level and g is the dual Coxeter number. In regime II we find ν = (l + g)/2l.