LONDON. Royal Anthropological Institute, April 28.—A. Leslie Armstrong: Excavations in the Pin Hole cave, Cresswell, Derbyshire. The Pin Hole excavations have been in progress since 1924. By a fortunate circumstance, this cave appears to be the only one of the Cresswell series which held the full story of the occupation of the ravine in Palaeolithic times, and it was the only cave left practically intact by earlier excavators. Two layers of cave earth exist, an upper level ranging in time from Upper Aurignacian to a phase which is contemporary with the Magdalenian of France. This has yielded an important series of tools in flint, which reveal the gradual development of the upper Palæolithic industries of Britain, and also two examples of early art, one of which is the engraved outline, on bone, of a masked male figure. The lower cave earth is in three zones, in each of which early Mousterian tools are found and definite evidence of the cave's occupation by man. This lower level has also provided valuable evidence relative to fluctuations of climate during the last great ice age of Britain. Many animal remains were found.