Historiographical accounts typically place the formulation of the first embryological theory of the evolutionary origin of vertebrates after the publication of Darwin’s On the Origin of Species (1859) ...
PROF. MACBRIDE, in his brilliant review (NATURE, Oct. 25, p. 639) of the recent embryological works by Dürken, Schleip, and Przibram, raises questions which are so fundamental in modern biology that I ...
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