GREY PI/)VER. 



SIBERIA IN EUROPE 



CHAPTER I. 



John Wolley Unknown breeding-grounds Birds of Archangel and Lapland 

 Voyages to the Petchora in the seventeenth century Schrenck's visit in 1837 

 Castren's visit in 1842 Keyserling's visit in 1843 Pelzam's visit in 

 1874 Hoffmansegg's visit about 1850 Outfit Letters of introduction. 



THE history of British birds has been enthusiastically studied 

 by ornithologists during the last half-century. In spring 

 and autumn several species of birds annually visit our shores 

 in considerable numbers, passing us in their migrations to 

 and from unknown breeding-grounds. These migrations, 

 and the geographical distribution of birds, have of late years 



