CONTENTS, XV 



Page. 



Report of the United States Bering Sea Commissioners — Continued. 



Why decrease of females was not noticed 344 



Diminislied size of harems 344 



Effect of decrease of females on male life 344 



Causes 345 



Where decrease of seals should be sought 345 



Cause, pelagic sealing 345 



Reasons for opinion 345 



Decrease caused by man 345 



Condition of herd untouched by man 345 



Birth rate and death rate 346-347 



Man does not necessarily increase death rate 348 



Eegulatiou of killing 348 



Interference with birth rate injurious 348 



Effect of a single young a year 348-349 



How birthrate may be lessened 349 



Killing a certain number of males will not affect birthrate 349 



Battles on rookeries show no lack of males 349-350 



Testimony as to no lack of males 350-351 



Decrease caused by killing females 351 



Natural condition of herd 351 



Classes of females 351 



Classes of males 351 



On what birthrate depends 351-352 



Explanation of diagrams 352-358 



One reason females are killed by pelagic sealers 338 



Conclusions fi'om diagrams 358-359 



Effects shown by diagrams 359 



Possibility of restriction 36q 



Class of seals killed 360 



Driving 360-361 



Killing pups for food 361 



Criticisms on manner of driving 361 



Male seals not injured by driving 362 



Management 362 



Seal IcilUng at sea or pelagic sealing 363 



Vessels and crew 363 



Manner of hvmting 363 



The gaff 363 



Indian hunters 363-364 



History 364 



Destruction of female seals 364 



Pelagic sealers enter Bering Sea 364 



Nursing females killed 365 



Dead pups on the rookeries , " 365 



