ON THE GREENLAND RIGHT-WHALE. 49 



Island, and the most ^vesterly of the Aleutians, but a little northwards of Behring's Island, 

 according to his statement, it still remains in some places to this late period of the season. Bow- 

 heads were then mingled with common South Sea right-whales on the fishing-ground, and 

 thus he had an opportunity of convincing himself by direct comparison of the essential difference 

 in the appearance of these two right-whales. It must, however, be left to future researches to 

 find out whether the Bowheads, when the summer is farther advanced, follow a northward course 

 through Behring's Straits, and whether, perhaps, they meet with the South Sea right-whales only 

 for a hmited portion of the year in the sea near the south point of Kamtschatka, as it were 

 in the confines of the ranges peculiar to the two species, while during the remainder of the 

 year they may be widely separated from each other, and living in altogether different parts 

 of the ocean. 



