Material on fat content, based on visual estimation, is given in Table 16. 



TABLE 16. FAT CONTENT OF INTERNAL ORGANS OF HERRING FROM 1948 

 TO 1951 EXPRESSED IN POH^JTS. 



Continuation 



For all the years during which observations were made, the lowest fat content was in June, 

 the bluest in September. In June, no fat deposits were laid down in a considerable number of fish. 

 In July and August, a fat content of 1-2 points is prevalent, in September - 3 points. 



The drop in the fat content during reproduction is short-lived and cannot be traced from 

 monthly average indices.. 



Future researches should clarify the fattening conditions of the summer herring and the 

 change in its fat content before and after the spawning period. 



Data on Sexually Immature Summer Herring 



There is no regular trade in young herring Ln Iceland waters . It may well be that it has not 

 aveloped because of the extremely favorable conditions for trade in the older age groups off the 

 northern coasts of the island. Up to 1946, the catch of fat herring in the Iceland region did not 

 exceed a few thousand centners . 



Young herring 22-26 cm. in length are found annually in the waters of northern Iceland, 

 being constantly present in the catches of large herring. There was a specially large number of 

 young herring in August and Septemi>er 1949. 



190- 



