54 



U. S. BUREAU OF FISHERIES 



Some of the seals recorded in the above tabulation as 2-year-olds, 

 and 4-year-olds probably were 3-year-olds, as not all male seals of a 

 given age fall within the length limits assigned for the males of that age. 

 As far as possible, the killings in 1935 were confined to 3-year-old 

 males. 



RESERVING OPERATIONS 



No 3-year-old male seals were marked for the breeding reserve in 

 1935. It was evident at the close of the season that the nmnber of 

 adolescent males of this age class was ample to maintain in subsequent 

 years the supply of bulls in sufficient strength to meet all breeding 

 requirements of the herd. 



COMPUTATION OF FUR-SEAL HERD 



The computation of the fur-seal herd in 1935 was made by Supt. 

 H. J. Christoft'ers. As of August 10 the total of all classes was 

 1,550,913 — a numerical increase of 120,495 over the figures for the 

 preceding year. The detailed report will be found on pages 65 to 71 

 of this document. Following is a comparative statement of the 

 numerical strength of the various elements of J:.he fur-seal herd in the 

 years 1924 to 1935, inclusive: 



General cotnparison of computations of the seal herd on the Prihilof Islands, 1924 



to 19 35 



Classes 



1924 



1928 



1929 



Harem bulls 



Breeding cows. _ 



Surplus bulls 



Idle bulls 



6-year-old males_ 

 5-year-old males. 

 4-year-old males. 

 3-year-old males. 

 2-year-old males. 

 Yearling males.. 

 2-year-old cows.. 

 Yearling cows... 

 Pups 



3,516 



208, 396 



2,043 



390 



8,489 



5,132 



18, 670 



21,551 



45, 085 



59, 291 



51, 359 



64, 240 



208, 396 



3,526 



226, 090 



3,558 



311 



4,105 



16, 792 



18, 692 



21. 185 



43, 515 



52, 091 



49, 786 



57, 309 



226, 090 



4,034 



244, 114 



2,002 



423 



13, 434 



16,812 



17, 872 



17, 189 



38, 183 



.56, 514 



44, 415 



62, 175 



244, 114 



4,643 



263, 566 



4,827 



972 



13, 450 



16, 073 



14, 448 



9,730 



41, 252 



61, 026 



48, 186 



67, 131 



263, 566 



6,050 

 284, 725 



5, 285 



1,449 

 12, 857 

 13, 001 



7,798 

 11. 1.33 

 49, 087 

 65, 861 

 57, 061 

 72, 481 

 284, 725 



Total --. 697,158 723,050 



761, 2S1 



808, 870 



871, 513 



7,187 



307, 491 



5, 207 



1,633 



10, 399 



7,016 



9,102 



13, 039 



64, 354 



85, 381 



67, 210 



85, 417 



307, 491 



971, 527 



Classes 



Harem bulls 



Breedincr cows.. 



Surplus bulls 



Idle bulls 



6-year-old males 

 5-year-old males, 

 4-year-old males 

 3-year-old males 

 2-year-old males 

 Yearling males., 

 2-year-old cows. 

 Yearling cows... 

 Pups 



Total 



1930 



8,312 



332, 084 



3, 963 



1,899 



5,612 



8,191 



11,327 



14,871 



69, 674 



92, 232 



72. 005 



92. 247 



332; 084 



358, 

 3, 



i; 



6, 



lo: 



12 



13; 

 74 



99, 



358, 



233 



042 

 291 

 888 

 553 

 193 

 960 

 198 

 828 

 012 

 410 

 626 

 642 



10,088 



387, 320 



2,893 



2,349 



8,154 



11,669 



11,351 



17, 849 



81, 101 



107, 592 



84, 682 



107, 593 



387, 320 



1,045,101 1,127,082 1,219,961 1,318,568 1,430,418 



1933 



10,213 



418, 299 



4,700 



2,341 



9,335 



10, 216 



15, 441 



18, 216 



87, 662 



116, 195 



91, 454 



116, 197 



418, 299 



10, 770 



451.751 



0, 494 



2,282 



8,173 



13, 897 



15, 802 



24, 770 



94, 920 



125, 490 



98, 768 



125, 490 



451, 751 



11, 547 



487, 883 



6,139 



2, .535 



11,117 



14, 276 



21. 096 



28, 165 



102, 555 



135, ,525 



106, 666 



135, 526 



487. 883 



1, 550, 913 



CORRECTION IN REPORT OF KILLINGS FOR 1934 



When the unpacking of the fur-seal skins shipped from the Pribilof 

 Islands in 1934 was completed, it was found that the consignment to 



