290 
BULLETIN OF THE BUREAU OF FISHERIES 
LENGTH WEIGHT RELATIONS 
Figures 32 and 33 show the length weight curves for some of the localities 
smoothed by the method of least squares, using the equation W = KL Z , where 
W— weight, Z = length, and K and x = constants. 
The equations for all of the curves are : 
Halibut Cove: 
Apr. 12-27, 1926 IF = .0584 L 3 - 93 
Apr. 25-May 11, 1927 TF=.0371 L 3 - 43 
Lower Ivachemak Bay: 
Aug. 19-30, 1926 , W=.0272 I, 3 - 43 
Aug. 10, 1927 TF = .0125 L 3 - 19 
Aug. 23-27, 1927 TF=.0126 L 319 
Sept. 8-21, 1927 W=. 0210 L 3 - 34 
Red Fox Bay, Shuyak Strait: July 15- Aug. 5, 1926 JF=.0651 L 3 - 01 
Elrington Passage and vicinity: 
June 25-July 2, 1926 l TF=.0123 Z, 3 - 18 
June 16-21, 1927 IF=.0177 L 3 - 31 
June 28- July 6, 1927 TF=.0262 U M 
Eshamy Bay: Sept. 12-20, 1926 TF=.0185 L 3 - 28 
McClure Bay: Sept. 29-Oct. 3, 1927 IF=.0240 L 3 - 38 
Naked Island: June 12, 1927 1E=.0382 L 3 - 49 
Macleod Harbor: 
June 13, 1927 - IF=.0369 L 3 - 54 
July 1-9, 1927 JP=.0169 L 3 - 29 
Neither the condition factor nor these values of K and x can be used for racial 
studies until a far more thorough study of them is made for each race. A constant 
difference between the fish of two localities may be due to environmental conditions 
only, but this difference may be of value in the study of migration. 
CLEANED WEIGHT 
In comparing the weights of fish of any given length by Figures 32 and 33, it 
must be borne in mind that a considerable difference in weight is caused by either 
gonads or ister. Figure 34 shows the total weight, cleaned weight, and gonad weight 
for 1927 for Halibut Cove, April 25-May 11, and for lower Kachemak Bay, August 
23-27. Note that the actual difference in weight resulting from cleaning for each of 
the two localities is very similar, despite the fact that the Halibut Cove material 
was taken just before spawning. In the Halibut Cove data most of the difference 
between the cleaned weight and the total weight is in the weight of the gonads. In 
the lower Kachemak Bay data the gonads are but slightly developed, and the differ- 
ence between the cleaned weight and the total weight is caused chiefly by a large 
amount of ister in the body cavity. 
