IN NORTH-EAST RUSSIA. 247 



have young in the middle of April, and a few pairs remain till the beginning 

 of June." 



The extent of country through which the Petchora flows is so great 

 that the meagreness of my information almost requires an apology. To 

 write upon the subject is equivalent to attempting a history of the migration 

 of birds in Great Britain from the observations of a single tour. I offer 

 these remarks merely as a skeleton, hoping that the details may be filled 

 up and the errors corrected by future ornithologists, who will find in the 

 Petchora a rich field for work for a long time to come. 



