  We present a Pfaffian identity involving elliptic functions, whose rational
limit gives a generalization of Schur's Pfaffian identity for Pf ((x_j -
x_i)/(x_j + x_i)). This identity is regarded as a Pfaffian counterpart of
Frobenius identity, which is an elliptic generalization of Cauchy's determinant
identity for det (1/ (x_i + x_j)).
