one row of eggs, the figures appearing in the tables herewith being 

 the number of eggs required to fill the trough. As far as the exigen- 

 cies of the regular hatchery work permitted, the eggs were measured 

 twenty-four hours after spawning and from three to five counts were 

 made during the season. 



Series of Yearly Measurements of Sockeye Salmon Eggs 



The uniformity from year to year is very evident and the fact 

 that the figures for one locality never overlap or even approach those 

 of another shows that there is a distinctive species of sockeye at 

 each of these places. 



Another interesting phase is that the size of the egg does not cor- 

 respond with the size of the fish or the time of spawning, for the 

 smallest fish of the three, that from Harrison Rapids, has much the 

 larger egg, as will be seen from the following table which shows the 

 length in inches, dates of spawning, and average measurement of 

 eggs: 



Variation in Spawning Season and Size of Sockeye Salmon Eggs 



That the size of the egg is not due to fuller development in the 

 later spawning fish is shown by the fact that the Cultus Lake sockeye, 

 the last to spawn, has, as far as the writer is aware, the smallest egg 

 of all the Pacific Coast sockeyes. 



A summary of the whole subject shows that at Morris Creek 

 there is a run of large, early-spawning sockeyes with medium sized 

 eggs; at Harrison Rapids very small, late-spawning sockeyes with 

 very large eggs, while at Cultus Lake there are also small, late- 

 spawning fish with exceptionally small eggs. 



88 



