CHAP, XIX. 



MIGRATION. 



241 



These extracts prove that part of tlie migrtition of these 

 species takes place across country ; hat probably the main 

 stream follows the coast, especially in autumn, as I was 

 myself an eye-witness, the year after my return from tlie 

 Petchora, on the island of Heligoland. 



OLD RUSSIAN SILVER 0B0S3. 



