FUR-SEAL CEN"SUS, PEIBILOF ISLANDS, 1919. 



113 



to be sure, but more than bad been expected. It was not thought that 

 the enormous excess of males which had been in reserve owing to the 

 closed season of 1912-1917 could be noticeably reduced in a single 

 season of commercial work; yet it was done and speaks well for the 

 conduct of the business by the island authorities. It should be noted 

 that not only the total number of bulls was slightly reduced but that 

 the percentage of idle bulls to harem bulls grew 'less. This is the 

 best evidence that the reasoning was sound which led to the con- 

 clusion in former years that a proportion of one idle bull to two 

 harem bulls produced the minimum average harem; and that this 

 latter is very close to 26, regardless of amount of male life, is a fore- 

 gone conclusion. 



AVERAGE HAREM. 



The counting of pups on certain of the rookeries enabled the 

 determination of the average harem on the rookeries counted. The 

 information derived therefrom, coupled with observation on the 

 ground, led to the results given in the table below. For purposes 

 of comparison the average liarems in 1918 are given, showing graph- 

 ically the increase in size of harems. 



Average Harem in 1919 for all Rookeries. 



Rookery. 



Breeding ' Ilarem 

 cows. I bulls. 



Average 



harem, 



1919. 



Average 



harem, 



1918. 



ST. PAUL ISLAND. 



Kitovi 



Lukanin 



Gorbatfh 



Ardiguen 



Reef 



Sivutoh 



Lagoon 



Tols t oi 



Zapaiini 



Lit lie Zapadni 



Zapadni l{cef 



I'olovina 



Polovina ' llfTs 



Little 1 olovina 



Morjovi 



V'ostochni 



Total 



Total for rookeries counted 



ST. GEORGE ISLAND. 



North 



Staraya Artil 



Zapadni 



South 



East Reef 



EastClills 



Total 



Total for rookeries counted , 



Total, both islands 



133,914 



12,093 



8,802 

 5,746 

 857 

 68 

 2,367 

 5,418 



23,258 



9,038 



157,172 



155 

 110 

 362 



46 

 720 

 230 



17 

 538 

 .'■>46 

 344 



28 

 192 



96 



38 



147 



1.004 



23.00 

 o 25. 34 

 034.00 

 025.00 

 031.19 

 o 30. 50 

 6 26.18 

 o 29. 79 

 o26. 19 

 o 29. 49 

 *21.57 

 6 30.18 

 6 23. 01 

 • 31.66 

 » 20. 69 

 o 30. 74 



4,573 



29.28 



480 



25.19 



225 

 124 



27 



5 



75 



129 



o 39. 12 

 6 46.34 

 6 31.74 

 6 13.60 

 6 31.56 

 42.00 



585 



39.70 



231 



39.42 



5,158 



30.47 



020.00 

 o 22. 35 

 031.00 

 o 22. 00 

 6 28. 19 

 27.50 

 6 20.48 

 o 26. 76 

 23.19 

 o 26. 49 

 619.85 

 6 28.88 

 o 20. 23 

 o 28. 67 

 o 23. 00 

 «27.74 



26.59 



27.88 



o 26. 75 

 • 34.00 

 6 l.S. 74 

 6 7.62 

 621.41 

 o 30. 00 



27.65 



19.91 



26.74 



• Estimate. 



6 Pups counted. 



The most significant information bearing upon the average harem 

 is furnished by Polovina Ilookcry. In 1918 it had 185 harems and 



