MIGRATION OF THE HEED. 123 



the presence of seals on the ishmcls for at least 

 eight months of the year, and that they have in 

 fact been killed there in every month of the year.^ 



The primal cause of migration is undoubtedly Causes, 

 the severity of the winter weather,^ and to that 

 may be added a lack of food supply,^ The seals 

 evidently consider these islands their sole home, 

 and oidy leave them from being forced so to do.^ 

 If the climate permitted they would without 

 doubt remain on or in the vicinity of the Pribilof 

 Islands during the entire year.^ That this is true 

 is evidenced by the fact of their so remaining 

 during unusually warrn winters, as above stated, 

 and from the further fact that the seals of the 

 Galapagos Islands, which much resemble in their 

 habits the Alaskan herd, do not migrate, not 

 being compelled so to do by the weather.*' Capt. 

 Budington, who has had twenty years' experience 

 as a sealer in the southern hemisphere, states that 

 "the Terra del Fuego and Patagonian seals never 

 leave the rookeries or the waters in the vicinity, 

 only going out into the inland waters in search 



1 Table of killing on St. Paul Island, Vol. II, p. 114. 



2W. H. Dall, Vol. II, p. 23,24; Charles Bryant, Vol. II, p. 5; 

 Daniel Webster, Vol. II, p. 180. 



''Same authorities. 



^Charles Bryant, Vol. II, p. 5; Samuel Falconer, Vol. II, p. 

 165; Kerrick Artoraanoff, Vol. II, p. 100. 



6 Charles Bryant, Vol. II, p. 5; T. F. Morgan, Vol. II, p. 62; 

 Article by Dr. Allen, Part III, Vol. I, p. 405. 



6 C. W. Reed, Vol. II, p. 472; see also Isaac Liebes, Vol. II, p. 515. 



