OUTSTANDING WORK AND WORKERS 119 



international character, but what is of greater worth, 

 makes such men and their work known to the entire world. 

 It is, in a measure, comparable with only one other organ- 

 ization that touches the biological world on many sides — 

 the Rockefeller Institute of the United States. 



Among great Swedish biological workers one finds men- 

 tion of : 



1. Einer Naumann, for his work on the reciprocal in- 

 fluence of the organism to the environment. 



2. Alvar Gullstrand, who received the Nobel Prize in 

 medicine in 1911, for his work on dioptics; 



3. S. A. Arrhenius, and (4) Theodore Svedberg, Nobel 

 laureates in chemistry, the former in 1903 for his ioniza- 

 tion hypothesis, and the latter in 1926 for his work in 

 physical chemistry. 



Denmark 



The Danes are: 



1. N. R. Finsen, whose work in applying violet rays 

 to therapeutics won him the Nobel Prize in medicine in 

 1903, and 



2. A. Krogh, whose work on capillaries made him Nobel 

 laureate in medicine in 1920. 



Finland 



The Finns are represented by: 



O. Aschan, who received the Nobel Prize in chemistry 

 for his work on the chemistry of rubber in 1917. 



