SEAWARD MIGRATION OF CHINOOK SALMON. 4I 



Table 41.— Young Chinooks from McCloud River, Baird, Calif., Jan. 22, 1912 — Continued. 



FORTY-THREE SPECIMENS WITH NEW GROWTH. 



Length. 



Ntunber. 



Scale record. 



Average number of 

 rings — 



To new 

 growth. 



Of new 

 growth. 



Average length of 

 anterior radius — 



To new 

 growth. 



Total. 



Average 



estimated 



length of 



fish at 



time of 



beginning 



new 



growth. 



m to IIS mm. 

 X06 to 1 10 nun . 

 loi to 105 mm. 

 96 to 100 mm . . 

 91 to 95 nun. . . 



Av. 104.0 nmi . 



U-7 



13- 2 

 12.9 

 II. o 



3- 5 

 2. 7 

 2.6 

 2. 7 

 3-0 



44-3 

 44.9 

 40. 2 

 39- 7 

 32-0 



55- 2 

 55-8 

 49- 5 

 49- S 

 43- o 



90.5 

 90. o 



8s. 5 

 81. s 

 73- o 



41. S 



51- 7 



86.0 



r February 27, 1912, 26 specimens were taken. One is a mature male, 127 mm. 

 long. The scales of this individual show 18 rings in the first year's growth and i in 

 the second year's growth. The length of the anterior radius is 51 to the beginning of 

 the new growth and 57 to the periphery of the scale. The estimated length at the 

 time of beginning the new growth is 114 mm. Twelve of the immature specimens 

 show the new growth at the margins of the scales. The other 13 specimens terminate 

 the scale growth in winter rings. The average length of the entire collection is 1 1 1 .6 mm. 

 Twelve males average 110.9 mm. in length; 13 females, 11 2.2 mm. The table (42) 

 follows : 



Table 42. — Young Chinooks from McCloud River, Baird, Calif., Feb. 27, 1912. 

 thirteex specimens ■rtthout new growth. 



TWELVE SPECIMENS WITH NEW GROWTH. 



