Multiple-Correlation Functions and Scaling Laws

The form of the multiple-correlation function in the Ornstein-Zernike approximation is investigated. As a result it is suggested that the index $\nu$, which describes the behavior of correlations in the critical region, is not determined by the indices which describe critical thermodynamic behavior. The "scaling law" relations for $\nu$ represent an approximation which is good for the Ising model in sufficiently few dimensions.