of Lamarck and Erasmus Darwin entitle them

to be regarded as the forerunners of Erasmus Darwin’s illustrious grandson. Cuvier was per- fectly right in his controversy with Geoffroy St. Hilaire ; the weight of evidence was un- doubtedly on his side. Up to 1859 impartial and competent men were bound to disbelieve in Evolution ; after that date, or at least so soon as the facts and arguments of Darwin* and Wallace had been published, they were equally bound to believe in it. He discovers who proves ; and by this test Harvey is the sole and absolute discoverer of the movements of the heart and ol the blood.

( b ) Concerning the methods used by Harvey, they were various, and his discovery, like most great advances in knowledge, was not achieved by one of the happy accidents which figure in

• “ The Variation of Animals and Plants under Domestication,” was

published in 1868.