Ian Snook provides an insight of the scientific contributions of Edgar R. Smith in mathematical and scientific field. Smith described the dynamical properties of colloidal suspensions, and solved the problem using the commonly used truncation of the expansion of these interactions. Smith also studied magnetization in ideal Bose systems, one dimensional X-Y model with random coupling constants, and correlations in the one dimensional Ising model with random coupling constants. The field covered by him also include response of a nematic liquid crystal to van der Waals forces, van der Waals interaction across non-uniform electolytes, and an upper bound on the free energy for classical systems with Coulomb interactions in a varying external field. Smith studied the problems related to Monte Carlo simulation of a planar Ising model roughening transition and simulation of electrostatic systems in periodic boundary conditions.