JOURNAL OF MAMMALOGY. VOL. 3 
PLATE 1 
Broken and Filled Narwhal Tusks 
A . — A large broken tusk, not ‘^filled.” The bloody contents of the cavity 
have disappeared; the algal growth has developed over parts of the fracture and 
into the cavity; the point is worn and white, its edges smoothed. B . — A strong 
tusk broken and afterwards '^filled.’’ The sharp edges of the fractures worn 
and smoothed, C . — The same specimen with the '^filling” pulled out. 
