of the Fishery Board for Scotland. 331 



CENTIMETRES. 





21-5 



22 



22-5 



23 



23-5 



24 



24-5 



25 



25-5 



26 



26-5 



27 



27-5 



28 



28-5 



29 2 



)-5 30 



30-5 



Males, I. 



1 



2 



9 



25 



35 



24 



23 



32 



35 



40 



35 



14 



7 





5 



1 



1 



- 



n II 





1 



12 



20 



35 



28 



32 



23 



36 



27 



19 



14 



7 



1 



1 



- 



- 



- 



Total, - 



1 



3 



21 



45 



70 



52 



55 



55 



71 



67 



54 



28 



14 



6 



6 



1 



- J 





Females,I. 







11 



19 



27 



32 



34 



29 



42 



34 



31 



15 



9 



2 



2 



3 



1 





„ II. 







4 



12 



25 



23 



21 



19 



23 



21 



14 



8 





2 



2 







1 



Total, - 



! 







15 



31 



52 



55 



55 



48 



65 



55 



45 



23 



16 



4 



4 



3 



1 



1 



MILLIMETRES. 





235-6 



237-8 



239-40 



241-2 



243-4 



245-6 



247-8 



249-50 



251-2 



253-4 



255-6 



257-8 



Males, I. 



14 



16 



10 



11 



8 



11 



9 



8 



9 



18 



13 



16 



II. 



14 



15 



13 



12 



9 



15 



14 





8 



11 



14 



X6 





28 



31 



23 



23 



17 



26 



23 



15 



17 



29 



27 



32 



Females, I. 



10 



13 



,0 



10 



16 



17 



14 





11 



14 



16 



20 



„ II. 



8 



11 



10 



10 



9 



9 



9 



0 



5 



11 



10 



9 





18 



24 



20 



20 



25 



26 



23 



13 



16 



25 



26 



29 



Total, - 



46 



55 



43 



43 



42 



52 



46 



28 



33 



54 



53 



61 



The younger herrings show the following :- The females, 215 in 

 number, extend from 225mm. to 250mm. (8J to 9|- inches), viz., to the 

 point where fusion takes place with the older group; but if the curve 

 is continued into the second group, as it ought to be to give the true 

 limit, then herrings of this series will extend to about 26*5cm., or 10| 

 inches — perhaps more. The modal size is 24'25cm., according to the 

 "5cm. arrangement of the measurements ; according to the millimetre 

 table it is at 244mm. (9| inches) ; the mean size is 237*5mm., or on 

 the extension of the series to 26*5cm., it is 245mm., and the computed 

 average is 239-9mm., or nearly 9^ inches. 



The males number 256, ranging from 218mm. to 250mm (8| to 9 J 

 inches, or further, as described for the females); the mode is 23"5cm., 

 according to the "5cm. arrangement, and according to the millimetre 

 table 237mm. (9| inches) ; the mean is 234mm., or, if the group is 

 extended, 241 5mm. (9^ inches), and the computed average is 236'7mm., 

 or 9y 5 6 - inches. 



The figures for the two sexes grouped together are 471 herrings, 

 ranging from 218mm. to probably 26'5cm. (8f to 10§ inches), a range 

 of 47mm. The modal size is 238mm. (9^ inches), and the average 

 237 , 7mm., or the same. 



