FUR-SEAL CENSUS, PRIBILOF ISLANDS, 1917. 123 



Surplus bulls: 



Breeding bulls in 1916 6, 132 



Deduct 12A per cent for old age ]it^ 766 



1916 bulls in 1917 5, 366 



' Total bulls in 1917 7, 556 



Deduct 1916 bulls in lot 5, 366 



Increment of young bulls in 1917 2, 190 



6-year-old males in 1916. 11, 167 



Deduct increment going into breeding bulls class, 19J 7 2, 190 



Surplus bulls Aug. 10, 1917 8, 977 



RECAPITULATION. 

 Pups 128, 024 



Breeding cows 128, 024 



Harein bulls 4, 850 



Idle l)ulls 2, 706 



Yearling females 88, 018 



Yearling males 88,013 



2-year-old female? 26, 917 



2-year-old males 26, 815 



3-year-old males 19, 507 



i-y ear-old males 16,631 



5-year-old males 14, 813 



6-year-old males 1 5, 397 



Surplus bulls 8, 977 



Total, all seals 468, 692 



