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BULLETIN OF THE BUREAU OF FISHERIES 

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/922 /Q24- /926 /92Q 
Figure 47. — The catch of raw herring and the gear used in . outheastern 
Alaska from 1922 to 1928, inclusive (see text), plotted on a logarithmic 
scalo to show the comparative rates of change. Dot and dash line, 
number of purse-seine boats. Broken line, total net tonnage of the 
purse-seine boats in hundreds of tons. Solid line, catch of raw herring 
in tens of millions of pounds 
Figure 48. — Total catch of raw herring in central Alaska from 1917 to 1928, inclusive. Heavy 
solid line, total. Light solid line, Prince William Sound. Dot and dash line, Cook fnlet. 
Broken line, Shuyak i trait 
