8 American Fisheries Society 



total length, i. e., from the tip of the nose to the base of 

 the tail. The muscle or edible flesh, representing by far 

 the greater volume of available nutritive material for 

 either the fish or for man, is alone presented. The data 

 ■include the length, weight, weight of muscle, total dry 

 substance of muscle and certain percentage relations. 

 The figures are represented in table I. 



In table II it is seen that the average total weight is 

 actually greater at the Black Diamond Station at the 

 head of the brackish water, than at Monterey on the 

 feeding grounds. The former fish are 11% heavier than 

 the average Monterey standard. On the other hand, the 

 Baird salmon have dropped in weight to 75% of the 

 weight of the standard Monterey salmon. 



The comparison above is made on the basis of total 

 weight of the specimens. If the total weight of the 

 muscle only is taken into consideration, the balance is 

 still in favor of the Black Diamond salmon. The average 

 weight is 7,220 gms. for the Black Diamond fish as 

 against 6,836 gms. for the Monterey fish. This is an 

 advantage of 105.6% so far as weight goes. At Baird the 

 weight of the muscle has fallen to 3,311 gms. When the 

 weight of muscle is taken in comparison with the total 

 weight of the fish, however, it appears that the muscle 

 of the Monterey fish weighs 67.8% of the total weight 

 of the fish, the Black Diamond 64.4%, while the Baird 

 specimens weigh 44.0%. These figures apply to the gross 

 mass of the muscle. 



When the total dry substance of the muscle is figured 

 in per cent, of the total (wet) muscle then we have 

 38.3% for the Monterey fish, 35.7% for the Black Dia- 

 mond, and 26.0% for the Baird. The weight of the dry 

 muscle averages in the three cases, 2,616 gms. for the 

 Monterey fish, 2,581 gms. for the Black Diamond fish 

 and 682 gms. for the Baird fish. 



These last figures, that is the percentage of dry muscle 

 substance of the total muscle, and the total dry weight 

 of muscle, bring out one striking comparison between 

 the Monterey and Black Diamond fish. The point is 



