4370 



TRANSACTIONS OF 



THE CONNECTICUT ACADEMY 



OF ARTS AND SCIENCES 



VOLUME 23] JUNE 1920 [PAGES 211 -241 



Russia's Contribution 

 to Science 



BY 



ALEXANDER PETRUNKEVITCH, Ph.D. 



Professor of Zoology in Yale University. 



NEW HAVEN, CONNECTICUT 



PUBLISHED BY THE 



CONNECTICUT ACADEMY OF ARTS AND SCIENCES 



AND TO BE OBTAINED ALSO FROM THE 

 YALE UNIVERSITY PRESS 



