24 



BULLETIN OF THE BUREAU OF FISHERIES. 



A collection consisting of loo specimens was made October 24 to 27, 1914, from 

 under the cannery at Ilvvaco, Wash. Ninety-four of these show the marginal band of 

 wider rings. In all cases where the scales do not show intermediate rings the scale 

 growth terminates in winter rings. The average size is greater than that of any other 

 collection studied, 146.7 mm. Most of these fish were measured, a few scales were 

 removed, and the fish were then returned to the river. The fish which were preser\-ed 

 were selected for unusual size. On this account data regarding the number and relative 

 lengths of males and females are not available. The scales of these fish present no 

 unusual features. The following table (18) contains the data: 



Table 18. — Young Chinooks from Ilwaco, Wash., Under the Cannery, Oct. 24, 1914. 

 specimens without rntermediate growth. 



SPECIMENS ^^^TH intermediate growth. 



Fifty-two specimens were taken in the McKenzie River near Leaburg, Oreg., No- 

 vember 2 and 3, 1915. (See Table 19.) The Oregon Fish and Game Commission maintains 

 a hatchery here, and the fish were collected just below the point where the hatchery is 



