388 



General Biology 



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



1825-1895. 



Lamarck, 1744-1829. 



Johann Gregor Mendel, 

 1822-1884. 



Hugo De Vries, 1848- 



M. Schleiden, 1804-1881. 



Theodor Schwann, 1810-1882. 



Karl Ernst von Baer, 

 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.) 



