ARCTIC ZOOLOGY. 147 



vourite food, the clio retusa, abounds. Sometimes an 

 individual dovekee is seen in the throng, or the majestic 

 and soUtary burgomaster. When the returning sun warns 

 for general departure, the roch is the last to disappear. 

 Ordinarily its flight is low, close to the surface of the sea, 

 which m that high latitute, during the summer months, is 

 mostly calm ; but when migrating, the Hock assumes an 

 elevation of about a quarter of a mile, and may, at any 

 distance in sight, be distinguished by its rapid and hurried 

 movement. 



This bird employs both wings and webbed feet when 

 under the surface of the water. Often, when suddenly 

 overtaken, have I seen them make such exertion, plunging 

 in a twinkling, and, rowing away from the cause of alarm, 

 yet not forgetful of their purpose, seize the flimsy clio in 

 their progress. On emerging, they are able at once to 

 take flight, Avhich facility they derive from the abundance 

 of oil which they possess. The flesh is esteemed good. 

 This predilection may proceed from a desire to enjoy fresh 

 meat ; and an apprehension may be entertained that few 

 delicate appetites would relish a pye formed of a bird of 

 its unsavoury habits. 



An accurate representation of this bird is given in Plate 

 XVI. Fig. 1. ; and the reader may see a well-preserved 

 specimen in the museum, at the Egyptian Hall, Piccadilly. 



Many other subjects in the zoology of Greenland remain 



