The doctrine of descent and The doctrine of descent and Darwinism doctrineofdescen00schm Year: 1896 Fig. 7. Fig. a Nevertheless, there remains the fact of the parallelism of individual development with the systematic series to which the individual belongs ; and, among thousands of examples, we will select some of the most accessible and convincing. Polypes have always been placed systemati- cally below the Medusae ; in the development of many

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