174 BIOLOGY AND ITS MAKERS 
been extensively cultivated, and the development of patho- 
logical study has greatly extended the knowledge of the 
tissues and has had its influence upon the progress of normal 
histology. Goodsir, in England, and Henle, in Germany, 
entered the field of pathological histology, both doing work 
Fic. 51.—Rupo.tpyu VirRcHOw, 1821-1903. 
of historical importance. They were soon followed by Vir- 
chow, whose eminence as a man and a scientist has made 
his name familiar to people in general. 
Virchow.—Rudolph Virchow (1821-1903), for many 
years a professor in the University of Berlin, was a notable 
man in biological science and also as a member of the German 
