86 



FISHERY BULLETIN OF THE FISH AND WILDLIFE SERVICE 



1600 — 



1200 — 



eoo 



in 400 

 O 



z 



O 



0. 



100 



1930 



1935 



1940 



1945 



O 



< 

 a: 



UJ 



> 



< 



IL 

 O 



in 

 a 



z 

 < 

 m 



o 



200 



150 - 



100 



V. 50 — 



Z O 



O 



I- 



o 



3 750 



o 

 o 

 a. 



200 





100 





1 930 



1935 



1940 



I94S 



eoo 



450 



300 



150 



M-5 





L 



< 



200 f- 



z 

 u 

 u 

 ce 

 w 

 a 



100 



1930 



1935 



1940 



t94S 



Figure 4.— Production, abundance index, and fishing-intensity index for lake trout in districts M-3, M--4, and M-5, 

 1929-49. Solid line = production; long dashes= abundance index; short dashes=fishmg-intensity index, hcale at 

 left (thousands of pounds) applies to production only; scale at right is in terms of 1929-43 mean for each item. 



