1. Common motifs in five ancient histories of technology--2. A pattern of prehistory--3. Alternate patterns of Kulturgeschichte: possible sources--4. The origin of language (Diodorus, VItruvius, Epicurus)--5. The genealogy of morals (Epicurus)--6. The geneaology of morals (Polybius)--7. A fourth century version of prehistory (Laws III)--8. Plato, Polybius and Democritus--9. Democritean sociology and history in the development of Greek thought--10. The heirs of Democritus