82 BULLETIN OF THE BUREAU OF FISHERIES. 



Table No. 4. — Estimated minimum number of males, igi4-iQ26, under operation of law of igi2fl 



1916 



1918 



Male pups 



Yearlings 



Two years 



Three years 



Four years 



Five years 



Six years 



Seven years 



Eight years and over 



Total bulls six years and over 



17,422 

 13.880 



9.939 

 1,658 

 >> 86 

 ii 86 

 I.SS9 

 ii73l 



48, 870 



23.312 



19.607 



15,680 



8,911 



9.939 



1,658 



86 



1.427 



3.i7t 



51.829 



24,43s 



19.815 



17.645 



10.620 



8,911 



9,939 



1,658 



1. 313 



13,910 



54, 526 

 25.914 

 20.770 

 17.834 

 12,489 

 10,620 

 8,911 

 9,939 

 2,787 

 21,637 



57.330 

 27.263 

 23,027 

 18,693 

 12,667 

 12,489 

 10,620 

 8,911 

 12,336 

 31,867 



60,363 

 28,665 

 23, 174 

 19.824 

 4,7SO 

 12,667 

 12,489 

 10, 620 

 19. 520 

 42,629 



1926 



Male pups 



Yearlings 



Two years 



Three years 



Four years 



Five years 



Six years 



Seven years 



Bight years and over 



Total bulls six years and over 



63,548 

 30, 182 

 24,36s 

 20,856 



4,7SO 

 4.7SO 

 12,667 

 12,489 

 27,407 

 52.563 



66, 887 



31,775 



25,655 



21,929 



4.750 



4.7SO 



4.7SO 



12,667 



36,059 



53.476 



70. 40s 



33,444 



27,008 



23,090 



4.750 



4,75° 



4, 750 



4,75° 



43,678 



53,178 



74,110 

 35,203 

 28,427 

 24,307 

 4.750 

 4.750 

 4,750 

 4,7St> 

 42,313 



SI. 813 



78,009 



37,055 



29,923 



25,585 



4,750 



4,750 



4,750 



4,750 



41,139 



50.639 



B2, 114 



39,005 



31,497 



26,930 



4,750 



4,7SO 



4,750 



4.750 



40, 129 



49.629 



86,434 



4",os7 



33,154 



28,347 



4,750 



4,750 



4, 7SO 



4.7SO 



39.261 



48,761 



a Based on assumed mortality of 50 per cent in first year, 15 per cent in second. 10 per cent in third, s per cent in fourth, and 

 14 percent annually alter eighth; with allowance also for food killings of 4.500 3-year-olds in 1914. 1915. 1916, and I9i7,and reserves 

 of 5.000 per annum after 191 7. 



^ One-half of idle bulls in 1914. 



Table No. 5. 



-Harem and idle bulls and annual increments required under various estimates at ratio of 

 I bull to 25 cows. 



o On the basis of 3.171 bulls which it is estimated will be present in 1915. 



Table No. 6. — Co-mparison of results of present law, and of a reserving system based on an estimated mean 



rate of increase of cows. 



Seals available for killing and reserving. . 



Reserve under the law 



Reserve under the estimate 



Seals killable under the law 



Seals killable under the estimate 



Prospective revenue under the law 



Prospective revenue under the estimate. 

 Loss of revenue under the law 



" 34, S30 

 30. 030 

 '2,813 

 '4,500 



''31,715 



$157,500 

 '$932,745 



$775, 24s 



1916 



17,64s 



13,14s 



975 



C4, 500 



16.670 



SlS7. SOO 



$583,450 



$425, 950 



17,834 



13.334 



1.055 



■^4,500 



16,779 



$157,500 



S587. 265 



$429, 765 



1918 



18,693 



5,000 



1,137 



13,693 



17.556 



$479. 255 



$614, 460 



$135, 205 



19,824 

 5,000 



1,229 



14,834 



18, 595 

 $518. 840 

 $650, 82s 

 *I3I,98S 



a Includes 9,939 5-year-olds, 8.911 4-year-olds. and 15,680 3-year-olds. 



& Includes 1.075 5-year-oIds to supply the required increment for 1916, 836 4-year-olds for that of 1917. and 904 3-year-olds for 

 that of 1918. 



c Food requirement only. 



rf Assuming that surplus 4 and s year olds were killed in 1915 and only 3-year-olds thereafter. 



« Allowing an average price of $15 for s-year-olds and $35 for 3 and 4 year olds. 



