WERE this book only for the mathematician it would be no book for me; but it is a great deal more. It is for all who care for the historical aspect of science; it is for all lovers of Greek, for mathematics is a true “Legacy of Greece,” and is interwoven through and through with Greek thought and philosophy. A History of Greek Mathematics. By Sir Thomas Heath. Vol. 1, From Thales to Euclid. Pp. xv + 446. Vol. 2, From Aristarchus to Diophantus. Pp. xi + 586. (Oxford: Clarendon Press, 1921.) 2 vols., 50s. net.