I have a long-standing interest in chemical composition gradients across spiral galaxies and the related question of variations in chemical abundance from galaxy to galaxy. One aspect has been the the effect of cluster environment on the abundances in spiral galaxies. Two published papers have argued that the chemical abundances in the spiral galaxies in the core of the Virgo cluster have higher abundances than spirals in the cluster periphery and in the field. This may be related to differing amounts of infall of primordial gas in the different environments. Two recent papers with Paul Robertson and others have studied the relationship between gas content and chemical abundances for spiral galaxies in clusters and in the field.