* The author is greatly indebted to Dr Colin Renfrew, without whose cheerful encouragement this work would never have started and who kindly pointed out the work of Bernareggi; to Dr G. H. S. Bushnell and Miss M. D. Cra’ster of the Museum of Archaeology and Ethnology, Cambridge, whose cooperation in loaning the dagger and allowing a degree of sectioning made it possible to achieve a worthwhile result; and to Dr F. H. Stubbings for agreeing to write an Appendix.