Sir John Grahame Douglas Clark (1907-95) was a British archaeologist and prehistorian who worked extensively on the Mesolithic period. In this book, which was first published in 1936, Clark presents a study of 'the cultural development, during the earlier half of the post-glacial time, of the food-gathering peoples of the western end of the plain of Northern Europe'. Numerous illustrative figures are also included, together with lists of objects and archaeological sites. The subject matter of the text formed the basis for a course of lectures delivered in the Faculty of Archaeology and Ethnology at Cambridge University during the Lent Term of 1934. This book will be of value to anyone with an interest in the Mesolithic period and the development of archaeology.