...Not until 1759 did the genius arise who was togive it an entirely new character, Caspar Friedrich Wolff...
Ernst Haeckel 「The Evolution of Man」
...This view was held by thegreat majority of the biologists of the eighteenth century, in spite of thefact that Wolff proved it in 1759 to be without foundation...
Ernst Haeckel 「The Evolution of Man」
... evenafter Wolff had discovered the real course of embryonic development andestablished it by direct observation!...
Ernst Haeckel 「The Evolution of Man」
...The lowest of these layers is the alimentary canal,and Wolff followed its development from its commencement to its completion...
Ernst Haeckel 「The Evolution of Man」
...Moreover, the important fact that the other systems of organs are developed inthe same way, from tubes formed out of simple layers, did not escape Wolff...
Ernst Haeckel 「The Evolution of Man」
...Hence, Wolff came to the view by 1768 whichPander developed in the Theory of Germinal Layers fifty yearsafterwards...
Ernst Haeckel 「The Evolution of Man」
...Finally, I must invite special attention to the mechanical character ofthe profound philosophic reflections which Wolff always added to his remarkableobservations...
Ernst Haeckel 「The Evolution of Man」
...During thewhole of these fifty-three years not a single book that appeared followed upthe path that Wolff had opened, or extended his theory of embryonicdevelopment...
Ernst Haeckel 「The Evolution of Man」
...This can be easilyproved from the fact that they did not travel as far as Wolff...
Ernst Haeckel 「The Evolution of Man」
...That he did not illustrate thisin its completeness, that he was a sign-post, as Albert Wolff very aptlysaid, rather an exemplar, is nothing...
W. C. Brownell 「French Art」
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