176 



BIOLOGY AND ITS MAKERS 



des Mcnschcn iiiid dcr Thierc) published in 1857. He applied 

 histology especially lo ihc tissues of insects in 1864 and sub- 

 sequent vears, an account of which has already been given 

 in Chai)ter \'. 



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, 1S50- 



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

 into the microsco])ic texture of the nervous svstem and sense- 

 organs have in large part cleared up the questions of the com- 

 plicated relations between tlie nervous elements. In com- 

 pany with other European investigators he visited the United 

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

 lectures were a feature of the celebration of the tenth anni- 



