82 BULLETIN OF THE BUREAU OF FISHERIES. 



Table No. 4. — Estimated minimum number of males, Igi4-IQ26, under operation of law of igi2.a 



o 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 after eighth; with allowance also for food killings of 4.500 3-year-oids in 1914, 1915, 1916, and i9i7,and reserves 

 of 5,000 per annum after 1917- 



6 One-half of idle bulls in 1914. 



Table No. 5. — Harem and idle hulls and annual increments required wnder various estimates at ratio of 



I bull to J§ cows. 



a. On the basis of 3,171 bulls which it is estimated will be present in 1915. 



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



rate of increase of cows. 



1916 



1918 



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. 

 I/>ss of revenue under the law 



"34,530 



30,030 



'3,815 



/4.500 



°3',7iS 



$157,500 



'$932,745 



$775. 24s 



17,64s 



13,145 



975 



^4,500 



16,670 



$157,500 



$583,450 



$425,950 



17,834 



13.334 



I. OSS 



*^4.Soo 



16, 779 



$157, 500 



$587,365 



S429, 765 



18, 693 



5,000 



I. 137 



13.693 



17.556 



$479. 2SS 



$614,460 



$I3S, 30S 



19,834 

 5,000 

 I. 339 



14.824 



18.595 



$518,840 



$650,825 



$131,983 



o Includes 9.939 s-year-olds. 8,911 4-year-olds, and 15.6S0 3-year-olds. 



6 Includes 1,075 s-year-olds to supply the required increment for igi6, 836 4-year-olds for that of 1917. and 904 3-year-oIds for 

 that of 1918. 



c Food requirement only. 



d Assuming that surplus 4 and 5 year olds were killed in 1915 and only 3-year-olds thereafter. 



« Allowing an average price of $15 for 5-year-oIds and $35 for 3 and 4 year olds. 



