THE HISTORY OF BIOLOGY 



387 



Charles Darwin, 1809-1882 Alfred Russel Wallace, 1823-1913 Thomas Henry Huxley, 



1825-1895 



Lamarck, 1744-1829. 



Johann Gregor Mendel, Hugo DeVries. 1848 



Theodor Schwann, 1810-1882. 



Karl Ernst von Baer, M. Schleiden, 1804-1881. 



1792-1876. 



Fig. 244. 



(De Vries and Mendel, from G. Stuart Gager's "Fundamentals of Botany" by 

 permission of P. Blakiston's Son & Co., Publishers. Remaining photographs from 

 Wm. A. Locy's "Biology and its Makers" by permission of Henry Holt & Co 

 Publishers. ) 



