It is many years since a major exhibition in England was devoted to the work of the whole of Samuel Palmer's circle, 'The Ancients', a group of young men which included, among others, the painters George and Welby Sherman, all of whom were much influenced by William Blake. Most recent exhibitions devoted to Palmer himself have stressed his early work of about 1835-35 - much of it done in the village of Shoreham in Kent - at the expense of his still...