TABLE 2. (CONT'D). 



The sexual products of the herring investigated were in stages III-IV (Table 2). The fe- 

 cundity was determined by counting the eggs in three samples, each of 5 grams. The size of the 

 samples was adjusted according to the size of the eggs; for example, for eggs in stage III (very 

 small) samples of 2.5 gm. were sufficient. 



The error in computing the number of eggs by the weighing method was very small, as only 

 the ripening ovocytes were counted. The primordial germ cells without yolk (single- and double - 

 layered follicles) were not counted. 



The Murmansk herring has a projier total spawning. Accordingly, no difficulties exist in 

 separating the ripe ovocytes from those which will mature during the following years . 



From the analysis of the material we have been able to find the relation of the fecundity to 

 various factors. For example, the fecundity increases with increasing length of the fish (Table 3). 



TABLE 3. THE VARIATION OF THE FECUNDITY IN RELATION TO THE 

 LENGTH OF THE FISH. 



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