Comment on confluent singularities in Ising and Heisenberg models

A high-temperature series analysis of the confluent correction to scaling in three-dimensional $s=\infty$ Ising and Heisenberg models on loose-packed lattices has been performed. The overall conclusion is that the case for the confluent correction in the Heisenberg model is about as strong as the corresponding case in the Ising model. Using alternative techniques we confirm the parametrization of Camp and Van Dyke based on the fcc series.