56 



RECORDS VOLUME XI, MARCH. 1919. 



er of the back has an ashy center and all of 

 the phimage has a greenish iridescence. 



The function of the stiffened tail — aside 

 from that of a steering apparatus — is proba- 

 bly to check the flight by being dragged in 



V'lo;. 4. Double-crested Cormorant. 1-10. 



