SALMON AND TROUT TN ALASKA. 87 



brighter. The fishermen thought these were "Uniik River fish." 

 Wliether regarded as fish travehng to another })asin or as a later run 

 not yet ready to enter the bay, these smaller fish account for the 

 abundance of 6-pound fish and the double node in the curve. In 

 1903 the fish of these two localities, examined at approximately the 

 same time, differed much more in averages, the Yes Bay fish exceed- 

 ing those of Karta Bay by more than 1 pound in weight, by 12 mm. in 

 length, and about 15 mm. in depth. In neither is there an indication 

 of more than one type. The curves for length, weight, and depth show 

 a single maximum, that for length in both localities on 560 mm., for 

 weight on 7.5 and S pounds, respectively, for Karta and Yes bays, and 

 for depth on 145 and 160 mm. Over 25 per cent of the Yes Bay fish 

 reach the maximum, while of the Karta fish less than 20 per cent are 

 of maximum weight and length and 24 per cent are of maximum 

 depth. Tliis indicates, again, that increased weight is largely due to 

 increased depth. In condition the Karta fish of this year were noted 

 as being quite as nuich, if not more, advanced than the Yes Bay. 

 This applies rather to the last lot of 153, examined July 23 to 26, in 

 which the shorter fish predominated, only 45 per cent being over 550 

 mm. in length, while of the first lot of 55, examined July 1, 62 per 

 cent were of that length. In the two lots from Yes Bay the curve for 

 that of 1903, taken earliest — about a month earlier than the 1904 

 lot — is much more like the curves for Karta than like that of Yes 

 Bay for 1904, rising to over 25 per cent on 560 mm., with extremes 

 between 480 and 610. In 1905 the values are more distributed, 

 varying between 10 and 15 per cent from 520 to 570 mm., with 

 extremes between 420 and 590. The average lengths, respectively, of 

 the 1903 and 1905 examples are 555 and 532 mm., the average depths 

 approximating 158 mm. in both cases, while the weights are 8.3 and 

 8.2 pounds. This indicates that the fish of 1905 were more of the deep 

 form, while those of 1903 were rather long and comparatively 

 slender. These 1903 fish were from the early part of the run, those 

 of 1905 some weeks later, giving another example of the long slen- 

 der type form in the early run. On the whole, it seems that Yes Bay 

 fish may be said to be deeper than the Karta fish of corresponding 

 maturity, and that the early fish of both localities are of less depth 

 and weight for corresponding length than later fish. 



Quadra and the Moira Sound streams, Kegan and Nowiskay, show 

 an almost exactly equal average weight in the fish examined in 1904, 

 as well as close similarity in the averages of length and depth. Inspec- 

 tion of the curves, however, shows this similarity to be factitious. 

 The Quadra fish are a symmetrical group, while the Moira Sound fish 

 are, like Yes Bay, composite, apparently made of a short deep type, 

 and another correspondingly longer and more slender. 



