Embryology History - Hans Driesch

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A personal message from Dr Mark Hill (May 2020)  
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I have decided to take early retirement in September 2020. During the many years online I have received wonderful feedback from many readers, researchers and students interested in human embryology. I especially thank my research collaborators and contributors to the site. The good news is Embryology will remain online and I will continue my association with UNSW Australia. I look forward to updating and including the many exciting new discoveries in Embryology!

Introduction

Hans Driesch
Hans Driesch (1867 – 1941)

Hans Adolf Eduard Driesch (1867 – 1941) was a German experimental embryology.

From 1891 to 1901 he worked in Naples at the Marine Biological Station. His experimental work was designed to establish a formulation for development and ended by adopting an Aristotlean teleological theory of entelechy.


Links: sea urchin



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Related Histology Researchers  
Santiago Ramón y Cajal | Camillo Golgi


Studies

The science and philosophy of the organism (1908)


Hilfer1990 Fig05.jpg

Driesch manipulating blastomeres of sea urchin eggs

Illustrations from H. Driesch (1892) showing effects of manipulating blastomeres of sea urchin eggs. His Figure 1 shows a normal 16-cell stage (copied from Selenka). Figure 2 shows a half-embryo from an 8-cell stage and Figures 3 and 4 half-embryos from a 16-cell stage. Figure 5 is a half-embryo at the blastula stage. These half-embryos developed into complete individuals. Figures 7 through 9 show blastulae in the process of dividing. These formed conjoined twins as shown in Figures 10 through 12. These results were interpreted as demonstrating regulative development.


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Images

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Cite this page: Hill, M.A. (2020, June 2) Embryology Embryology History - Hans Driesch. Retrieved from https://embryology.med.unsw.edu.au/embryology/index.php/Embryology_History_-_Hans_Driesch

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© Dr Mark Hill 2020, UNSW Embryology ISBN: 978 0 7334 2609 4 - UNSW CRICOS Provider Code No. 00098G