65 



DATE 



DIMENSIONS OV THE YOUNG IIEUUINGS OUSERVED 



67—106 m.m. 



G8 — ]13 m.m., most of tliem vary between 68 and 78 m.m. 



G7 — 102 m.m., most part aboiit 80 mm. 



Most of tliein 75 m.m.; a single one of 120 m.m. 



Numerous specimens of about 90 m.m.; four iiave a leugth of 



55 m.m. 

 A few specimens of 37 m.m. 

 Tlie snuillest ones are 37 — 12 m.m.; the larger ones 57 — GO 



m.m. 

 Tlie smallest ones 37 m.m., the largor ones 57 — 59 m.m. 

 Numerous specimens of 48.75 and 80 m.m., a few of 98 mm. 

 56 — 81 m.m. 

 60—68 m.m. 



40 — 50 m.m. tlie smaller ones; larger ones of 60 — 70 m.m. 

 58—75 m.m. 

 76 — 83 m.m. 

 65 — 95 m.m. 

 81—90 m.m. 

 i 65 — 80 m.m. 

 One specimen of 73, numerous of 85 — 90,several of 100 — 112.5 



m.m. 

 Numerous ones of 80 — 100 m.m. 



73 — 100 m.m.; most of them between 88 and 95 m.m. 

 77 — 100 m.m.; most of them between 85 and 95 m.m. 

 49—75, 70—78, 83—114 m.m. 

 A few specimens of about 90 m.m. 



The fishermen assert, that almost in every mouth of the year 

 »zeebliekjes" (young herrings) of every size (i. e. between 50 

 and 110 ra.m.) may be founcl in the Zuiderzee. Judging* from 

 the little table giveu above , it canuot be denied that there is 

 reason for this assertion. When we pay special attention to such 

 young herrings as have a length of from 70 — 95 m.m., and 

 which more in particular are named »zeebliek", we find that 

 little fishes of that leugth occurred in March , April and May 

 and again in July, August, September, October, November, De- 

 cember and February; June alone seems to be destitute of little 

 herrings of that size , but then the material I collected in that 

 month is not so abundant, that great value should be attached 

 to the negative conclusion arrived at for that month. 



The smallest of the young herrings appear toward the end of 

 June; after what we have said above (p. 60) over the long du- 

 ration of the spawning period of the herring, we cannot wonder 

 at the circumstance that such very small herrings also occur in 



