of the Fishery Board for Scotland. 



215 



Tables show details of these and the arrangement into the various series 

 or generations. In some cases, where the number of cod in the collections 

 was fairly large, the distinction of one group from another was tolerably 

 easy, especially when the millimetre measurements and tables were con- 

 sulted as well as the diagrams or curves. All the measurements were 

 made to millimetres, and curves were constructed of each collection. In 

 other cases, the division of one series from another is only approximate, 

 and one or two or several fish may belong to one or the other. For 

 example, in the collections from Aberdeen Bay, the chief group in July 

 might terminate at 32cm. or 34cm. instead of at 28cm., so far as these 

 measurements by themselves indicate; but this interpretation would be 

 opposed to the limits of the group later in the year. It will be often 

 found, as in the July collections, that a few fish at the end of what may 

 appear to be a compact series are considerably larger than the others and 

 separated from them by a good interval ; and it is difficult to decide 

 whether they should be looked upon as stragglers from that series — fish 

 which have grown much quicker than their fellows — or stragglers from 

 the next larger series, which may not be well represented. 



COD. 



Date. 



Group 



No. 



Range of Size. 



Modal 

 Size. 



Approximate 

 Mean Length 



Approximate 

 Age. 



Apparent 

 Growth from 



PrpppHino- 









Cm. 



Inches. 



Cm. 



Inch. 



Years 



M'ths. 



Sei 



•ies. 



I. — Aberdeen Bay — 





















Cm. 



Inch. 



January 15, 1902 



I. 



7 



9-7-16-2 



3H-6f 



9-11 



12-5 



5 





9£ 









II. 



15 



26-40 



10i-15| 



30 



31-32 



12-12$ 



1 



9* 



19 







1)1. 



3 



48-59 



19-23 









2 



9* 







February 11, 1905, 



I. 



16 



8-17 



3i-6| 



9-10 



12-5 



5 





10£ 







March 29, 1905 - 



I. 



6 



9-19 



34-7* 





13-5 





1 









May 13, 1902, 



II. 

 III. 



5 

 5 



14-20-7 

 27-34 



5*-8J 

 10f-13§ 









1 



2 









June 13, 1901, - 



11. 



31 



14-3-23 



5S-9A 



18 



18-5 



n 



1 









June 28, 1901, - 



II. 



19 



2 

 6 



19-26 

 29-36 

 54-60 



7i-10i 

 21J-231 



21 



22 



8f 



1 



2 



3 

 3 







July 30, 1901, 



I. 



1 



6-5 













4 









II. 



43 



16-7-28 



6f-ll 



23 



23 



9 T V 



1 



4 









III. 



26 

 1 



29-3-46 

 49-8 



HiV-18* 









2 



4 







July 31, 1901, 



II. 



32 



16-7-27-9 



et-ii 



19-23 



22-5 



84 



1 



4 







