Society of Rheology

Over the past five years the membership of the Society of Rheology has held reasonably steady at around 650, and the attendance at the annual fall meeting has also remained approximately constant at about one‐third of that number. In contrast to these figures, the number of papers presented has almost doubled. At the 35th Annual Meeting of the Society, which was held October 26–28, 1964, at the Mellon Institute in Pittsburgh, Pa., there were 62 papers on the program, necessitating double and evening sessions. As much as possible, the sessions were organized along topical lines: melt flow, thermodynamics and constitutive relations, dynamic viscosity, network polymers, viscosity‐structure relations, hydrodynamics of viscoelastic flow, and experimental nonlinear viscoelastic flow. In addition, there were three sessions of general papers, plus a special one‐day session on the physics and mechanics of random media.