Abstract
One of Professor Childe's leading characteristics as a prehistorian has been the range and depth of his interests and sympathies. In the present contribution it is desired to acknowledge the interest he has shown in the mesolithic background to the neolithic colonization of Europe and his uncommon awareness of the relevance of Quaternary Research to the problems of prehistory.The opportunity will be taken to reconsider, in the light of a more abundant material and of recent advances in knowledge, the microlithic industry of Late Boreal age, first brought to light in the Cambridgeshire fens during the excavations carried out on behalf of the Fenland Research Committee during 1932 and 1934 at Plantation and Peacock's Farms, Shippea Hill. The object of these excavations was primarily stratigraphical and only a comparatively small quantity of mesolithic material was obtained at the time. Since then the opportunity has been taken at favourable seasons to collect on the surface of the sand ridges, and that on Peacock's Farm has yielded a sufficient quantity to give a reliable indication of the cultural affinities of the industry. Further, the researches of our French colleagues have thrown fresh light on the whole question of Post-Azilian microlithic industries and the new discoveries have led to changes of nomenclature directly relevant to the classification of the Peacock's Farm industry. Again, the zoning of British Postglacial deposits by means of pollen-analysis undertaken by Dr Godwin and his colleagues has made it possible to fix the chronological context of the Peacock's Farm assemblage and this in turn has made feasible a new approach to the history of the microlithic industries of Britain. Thanks to Dr Godwin's kind co-operation, it is now possible to publish a re-drawn pollen-diagram, illustrating the stratigraphy of the Lower Peat bed at Peacock's Farm and showing the relationship of the mesolithic occupation both to the forest-history zones and to the neolithic occupation of the sand-ridge on which prehistoric man settled from time to time.

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