Treasure in the dust is the author's symbol for the knowledge of the past to be found in the earth and interpreted by the archaeologist. The book is an exciting, always comprehensible setting down of the known facts of North American prehistory. There is no evidence of pre-modern man in North America, which implies that the earliest inhabitants were immigrants who came across from the Bering Straits, Siberia and Alaska some thirty thousand years ago. The conjectures of their migrations and adaptations to various parts of the new world are based on artifact, fossils, bones, imprints. The dating of the evidence has been made more accurate, almost to the year, by a new process of measuring the radioactivity given off by Carbon 14, which is found in organic substances only....Some fascinating information, and the scientific approach here is also an exciting one for a lay as well as learned public.