This survey of Old-World prehistory may conveniently begin with the melting of the Pleistocene ice-sheets some 15,000 years ago; for the latest enlargement of our knowledge of the evolution of man and of his earliest cultures were very properly included in the ‘Panorama of Anthropology’ published in Diogenes 2. Even with that limitation of range, a survey cannot be a summary. Prehistorical archaeologists aspire to recover the history of preliterate societies all over the Old World during ten thousand years. But not even the history of England in a single century could usefully be condensed into twenty pages. Nor should our panorama be a descriptive catalogue of exciting new discoveries. Striking additions to our knowledge have of course been made during the last eight years both as a result of excavation and to reward less spectacular research in museums and libraries. (For instance, the first object, undeniably manufactured in and imported from Mycenaean Greece to be recognised in the British Isles or indeed anywhere north of the Alps was noticed in 1948 in a Cornish museum where it had been lying neglected for a hundred years since it had been dug from a barrow near Pelynt. Again the oldest metal helmet found north of the Alps has just been identified by searching through files of German newspapers of 1847!) Some of the finds in question no doubt have an immediate appeal as beautiful or bizarre. Many, including the scientifically most significant, can only be appreciated by specialists or after a tedious technical explanation. Yet some recent discoveries and publications have promoted, if not the final solution, at least the formulation in soluble form, of familiar problems that have preoccupied archaeologists and intrigued historians for nearly a century. I shall therefore try here, after indicating some modern general trends in research, to present the position of those old problems in the more definite and precise form which they have now assumed. Quite a number of new discoveries can then be mentioned in an intelligible context.