216 BIOLOGY AND ITS MAKERS 
of Stieda’s Life of 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 
Fic. 65.—Karvt Ernst von Bakr, 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, 
