^ '° TRAKSACTIONS OF THE 



CONNECTICUT ACADEMY OF ARTS AND SCIENCES 



Incorporated a. D. 1799 



VOLUME 21, PAGES 145-200 FEBRUARY, 1917 



The Relationship 



of the 



Tetracoralia to the Heiatdfalla 



BY 



W. I. ROBINSON 



NEW HAVEN, CONNECTICUT 



1917 



