106 SEAL LIFE ON THE PRIBILOF ISLANDS. 



We have then to hud out how many new individuals were among 

 the seals rejected from the subsequent drives. The proportion rejected 

 from the lirst drive from Northeast Point was estimated as 45 percent; 

 from the second drive, 00 per cent and 05 per cent, or an average of 02.5 

 percent; from the third drive, 73 per cent. The increase in the second 

 and third drives is 17.5 and 28 per cent, respectively. These percent- 

 ages we may take to be those of the new individuals. 



We may make uj) the total, therefore, in the following manner: 



Number killed June 20 1,961 



Rejected Jiuie 20 1,607 



Number killed .Inly 9 aud 10 1,391 



Additional per cent rejected July 9 and 10 216 



Number killed July 22 827 



Additional per cent rejected July 22 413 



Total 6, 415 



This may be taken as the number of seals on the hauling ground dur- 

 ing the six weeks. Treating the other hauling grounds in the same 

 manner, we have the following amounts: 



Northeast Point 6, 415 



Reef 5,933 



Halfway Point '. 1,692 



Englisb Hay 1, 877 



Zajjadn ie 3, 551 



Lukannon 1, 581 



Total 21,049 



This, it will be observed, is considerably less than the number driven, 

 viz, 28,970, but it re])resents, in my oi)iiiion, much more nearly the cor- 

 rect number of seals present on the liauling ground during the i)eriod. 



This total, 21,040, is based on the assumption tliat all the baclielors 

 have arrived by August 1. But as at the last killing, on that date, 

 about 20 per cent of killable seals were still obtainable from the num- 

 ber driven up, it would appear that if killings were made later (at 

 least up to the end of August) a small number of new seals would be 

 obtained. 



I calculate that this would not exceed 2,000 seals for all the hauling 

 grounds. Adding this to the total previously obtained, we have 23,049 

 for the whole number of bachelor seals on the hauling grounds during 

 the season. This includes only the grounds from wliich drives were 

 made, and we have yet to consider the grounds at Ketavie and the 

 Lagoon, which were not disturbed; also the areas back of the breeding 

 grounds and the fringe at the water's edge. For the Ketavie hauling 

 ground I estimate from my observations that the number should be 

 about 500, for the Lagoon hauling ground 400. 



For the areas back of the breeding grounds aud the water front no 

 reliable estinurtecan be made. These bachelors are constantly moving 

 about, and were also more or less disturbed in some places this season, 

 at least by persons passing to and fro. The bachelors at the water's 

 edge doubtless go to the terminal hauling grounds, and may perhaps 

 safely be regarded as already estimated for. 



If one-tenth were added for these scattered bands of bachelors, it 

 would probably be sufficient; but this is a purely nominal estimate. 



To recapitulate, the total is made up as follows: 



Number of seals killed May 27 to August 1 11, 398 



Additional seals on the hauling grounds from which drives are made 9, 651 



Seals on the hanling grounds from which drives are not made (Ketavie and 



Lagoon) 900 



liumber of seals in scattered bands back of the rookeries 2, 195 



Total 24, 144 



