36 - 



Circular 



to the Members of the Herring Committee. 



In the course of a meeting held at Copenhagen, from 27th April to 1st 

 May 1914, the International Committee for Herring Investigations agreed upon 

 the following investigations, intei' alia: 



1) (Item 2 of the programme) Investigations of representative samples 

 of the herrings landed .... as to size, number, weight, and general condition, 

 especially as to maturity. 



2) (Item 3 of the programme) Investigations of unsorted samples with 

 regard to which the place and time of capture are known, especially of spaw- 

 ning shoals, as to sex, size, age, and maturity. The age should be deternlined 

 by a study of the scales. 



It was moreover agreed upon that the further determination of the 

 programme with regard to these items should be entrusted to Dr. Andersson, 

 Dr. Fulton and Dr. Hjort. These further preparations demanded in the first 

 instance an examination of the following questions: 



Size of the samples (i. e. number of individuals) to be examined in 

 each particular case, and. 



Number of samples which it was considered desirable to examine 

 for each water (fishery). 



The Norwegian investigations have, during recent years, furnished so 

 great a quantity of material embracing samples of different sizes, that it should 

 be possible, by closer comparison of these, to arrive at a definite opinion as 

 to the two points above referred to. Mr. Einar Lea has therefore, at my 

 request, drawn up the appended review concerning the question as to how 

 many individuals a sample should contain, and how many samples would be 

 desirable. 



Mr. Lea's investigations on the subject lead, as will be seen, to the 

 following conclusions: 



