118 



U. S. BUREAU OF FISHERIES 



Seal killings on Prihilof Islands in 1923 — Continued 

 ST. GEORGE ISLAND— Continued 



Date 



July 



July 

 July 



July 



Aug. 

 Aug. 



Hauling ground 



Skin from seal which fell 

 from cliff.-- - 



North, Staraya Artil, and 



East Cliffs 



Zapadni 



North, Staraya -\rtil, and 

 East Chffs 



Skin from seal found dead. 



North, Starava Artil, East 

 Reef, and East Cliffs... - 



Zapadni 



North, Staraya Artil, East 

 Reef, and East Cliffs 



Skins 



se- 

 cured 



452 

 29 



165 

 1 



117 

 15 



Date 



Sept. 6 



Sept. 11 

 Sept. 13 

 Sept. 25 

 Oct. 20 

 Oct. 22 

 Oct. 23 

 Oct. 25 

 Oct. 30 

 iS^ov. 1 



Serial 

 No. of 

 drive 



Hauling ground 



From seals killed for fox 

 food- 



'"[doIIII^"]'^^""""" 

 do -- , 



North and East Cliffs 



Zapadni , 



Staraya Artil 



North and East Cliffs 



do--- - , 



Staraya Artil 



Total. 



Skins 

 se- 

 cured 



4 



4 



2 



1 



218 



39 



13 



224 



216 



39 



3,079 



AGE CLASSES OF SEALS 



The method by which the sizes of male seals of the various age 

 classes have been determined has been described in previous reports. 

 For convenience the limits of these age classes are shown in the 

 following table: 



Age standards of hodij lengths of male seals, Prihilof Islands 



Ages of seals killed on Pi-ibilof Islands, calendar year 1923 ' 



' The above table does not include skins from animals that died after shipment to the Steinhart Aquarium, 

 San Francisco, as mentioned elsewhere in the report. 

 2 Cows unavoidably and accidently killed. 



MARKING OF RESERVED FUR SEALS 



In 1923 it was decided to place a mark upon a definite number of 

 the male seals constituting the breeding reserve made in that year 

 from the 3-year-old class. Plans were accordingl}^ made for mark- 



