23 o ON SNOW-SHOES TO THE BARREN GROUNDS 



absolute smoothness, which extends to the very points. 

 The horns of an aged bull of course vary in size, very 

 much as do the horns of all other animals, but the differ- 

 ence is chiefly noticeable in the spread of the boss, thick- 

 ness of horn at the median line, and width of crevice. 



TWO-YEAR-OLD MUSK-OX TtULI. 



The largest head I killed and brought out measures 

 from top to bottom of the boss at the median line io 

 inches, while the length of horn from median line to point 

 measures 27-^-; width of crevice, i-J inches; thickness of horn 

 at crevice, 3^- inches. This, the Indians said, was an unus- 

 ually large one, and certainly the crevice at the base was 

 wider than in any other bull I saw of the forty musk- 

 oxen we killed on the trip. 



In the cow the width of the boss does not vary very 

 much, and would average less than half of the width of 



