SALMON AND TROUT IN ALASKA. 



85 



Table 5 shows the depths of the males tabulated in the same 

 manner as the lengths and weights, showing these measurements in 

 percentages of the total number of fish in each lot measured. Dia- 

 gram E presents the same information for 1904 shown by curves. 



Table 5. 



-Depths of Male Sockeyes, Shown as Percentages of the Total 

 Number of Examples Examined for Each Locality. 



A close correspondence will be seen in all the curves for Dolomi and 

 Tamgas.*^ The greatest number of individuals in each are 4-pound 

 fish. The balance of the average weights of the two lots is destroyed 

 by the varying numbers under and over this maximum. The weight 

 curve, however, for Dolomi is very similar to that for Tamgas, though 

 it occupies a place about 0.5 pound higher in the scale, the average 

 weight for Dolomi being 4.5 pounds as compared with 3.9 pounds. 

 An examination of the length curves (diagram e) also shows averj^ 

 close parallel between these two localities, while the difference between 

 the curves for depths (diagram f) will explain the greater weight of 

 the Dolomi examples, the depth curve for Dolomi standing about 5 

 mm. higher on the scale than that for Tamgas, Comparing the two 

 lots, it is shown that while the average length is about the same for 

 each locality, and the number of examples of any given length is 

 about the same for each, the Dolomi fish average about 5 mm. greater 

 in depth and therewith 0.5 pound greater in weight. These two 

 localities seem to be set off clearly from all others examined. 



«In the following discussion of the tabular data reference is to the males only 

 unless otherwise specified. 



