2l0 



BIOLOGY AXD ITS MAKERS 



of Stieda's Life oj Von Baer (see Fig. 65). This, perhaps 

 the best of all his portraits, shows him in the full devel- 

 opment of his powers. An examination of it impresses one 



Fig. 65. — Karl Ernst von Baer, 1792-1876. 



with confidence in his balanced judgment and the thorough- 

 ness and profundity of his mental operations. 



The portrait of Von Baer at about seventy years of age, 



