GROWTH AND MATURITY OF SALMON IK THE OCEAN 
31 
fact, apparent from Figure 5, that the size of the smaller eggs agrees with the size 
of eggs in other later collections, in which there is no question as to the correct inter- 
pretation. Reference to Figure 9 shows also that these small eggs are approximately 
the same size as those of the immature fish taken at the same time, which were in 
their fourth year, stream nuclei — a group fairly comparable \^dth the one under 
I 
I 
si 
I 
[•] 
ZX^y 
Fig. 5.— Sizes of eggs of females in their fourth year, ocean nuclei. Columbia River and the 
ocean ofl the mouth of the Columbia 
discussion. The distribution of egg sizes in the case of these 4-year fish with stream 
nuclei is similar to that of the 4-year fish with ocean nuclei in that it does not seem 
sharply to separate the two groups of mature and immature fish. The factor 
i>X 100 ^ described above and illustrated in Table 1, has been calculated for that 
