CONTENTS. 5 



Page. 



The data on rookeries where counting of pups was not done Ill 



1. Area computations Ill 



2. The average harem on rookeries where pups were not counted 113 



3. Percentages of dead pups and percentages of increase 115 



Method of estimating bachelors 117 



Yearlings 119 



2-year-olds, male and female 120 



3-year-old males 120 



4-year-old males 120 



5- year-old males 120 



6-year-old males 120 



Surplus bulls 121 



Complete census of fur-seal herd, 1917 122 



