Plate 58 



I'ljpcr: Distant \ic\v uf tlic rookcTv of l)lack-ci'(i\viUMl iiifjlit lu'fons at Barn- 

 stable, Massachusetts, presented by Dr. Alfred (). Gross, referred to on page 198. 



Lfjwer: Some nests in the above rookery, July 3, 1918, photographed by the 

 author. 



443 



