ALASKA FISHERY AND FUR-SE.AJ. INDUSTRIES, 1920. 85 



Ages of Seals Killed on Pribilof Islands, Calendar Year 1920. 



Age. 



Yearlings 



2-year olds 



3-}-earolds 



4-year olds 



.5-year olds 



6-year olds 



7-j'ear olds and over. 

 Cows ' 



Total 21,936 



Summer (Jan. 1-Aug. 10), 

 1920. 



St. 

 Paul. 



7 

 166 

 15,914 

 4, 988 

 45 

 39 

 709 



St. 

 George. 



194 

 2,917 

 *43 

 61 

 4 

 12 

 11 



7 



360 



18,831 



5,831 



106 



43 



721 



79 



Fall (Aug. 11-Dec. 31), 

 1920. 



St. 

 Paul. 



St. 

 George. 



Total. 



Grand 

 total. 



7 



388 



19,376 



5,921 



111 



43 



722 



80 



4,042 25,978 



670 



26,648 



1 The few cows reported above, about one-third of 1 per cent of the total take, were accidentally and 

 unavoidably killed. Every possible effort is made to avoid the killing of cows, but persons familiar with 

 conditions at the islands wil! readily appreciate that once in a great while a cow is killed. 



branded seals. 



Fifteen 8-year-old male seals, bearing the brand placed upon them 

 as pups in 1912, were killed during tlie calendar year 1920. Of this 

 number six were taken on St. Paul Island and nine on St. George 

 Island. 



It is from the 1912 series of branded seals that the data were ob- 

 tained from which the age classification standards now in use were 

 developed. Observations have also been made as to the develop- 

 ment and movements of female seals bearing the 1912 brand. It is 

 believed that more dependal)le information has been obtained as a 

 result of the branding done in 1912 than from any similar work done 

 in the past. 



The following table shows certain information secured from the 

 animals killed this season : 



IlECOKDS OK Branded 8-year-old Male Fl^r Seals Killed on Priiulok Islands, 



Calendar Year 1920. 



' Seals were bled before being weighed. 



The above table presents information comparable with that secured 

 from the branded seals of 1912 killed in past years. These earlier 



