176 



BIOLOGY AND ITS MAKERS 



des Menschen und der Thiere) published in 1857. He appli( 

 histology especially to the tissues of insects in 1864 and sub- 

 sequent years, an account of which has already been given 

 in Chapter V. 



Cajal as Histologist. — Ramon y Cajal, professor in the 

 University of Madrid, is a histologist whose work in a special 



Fig. 53. — S. Ramon y Cajal, 1850- 



field of research is of world-wide renown. His investigatioi 

 into the microscopic texture of the nervous system and sens< 

 organs have in large part cleared up the questions of the coi 

 plicated relations between the nervous elements. In coi 

 pany with other European investigators he visited the Unite 

 States in 1899 on the invitation of Clark University, where his 

 lectures were a feature of the celebration of the tenth anni 



