8 . No appreciable differences have been observed in the macro- and microscopic struc- 

 ture of the ovaries from herrings taken in the Barents Sea, on the west coast of Spitsbergen, and 

 on the coast of northern Norway . 



9 . When the time of the occurrence of stage III is known, it is possible to determine the 

 time of spawning approximately. 



From the study of the maturity stages we may establish a map of the distribution of the 

 herring according to these stages . 



252 



