Or 
of the Fishery Board for Scotland. 21 
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. 
Approximate] Approximate 
Mean Length} Age. ap perat 
Range of Size. 
x Modal Growth from 
Date. Group| No. aes Preceding 
Series. 
Cm. | Inches. Cm. | Inch.!Years./M’ths. one 
Cm. | Inch. 
I.—ABERDEEN Bay— 
January 15, 1902 - if 7 | 9-7-16-2) 342-6% | 9-11 12:5 5 = 94 
Il. 15 26-40 | 104-15} 30 31-32 |12-123) 1 94 19 74 
DL 3 48-59 | 19-23 ee * iva 2 94 
February 11,1905, - i 16 8-17 34-63 | 9-10 12-5 5 ae, 104 
March 29,1905 - -| I Gai) BHI) | SEE he: 13-5 | 53 1 
May 13,1902, - ~-| IL. 5 | 14-20-7] 54-8} oe ,: a i | tg 
Tir. | 5 | 27-34 |10§-133] .. 7) eb 2 | 1 
June 13,1901, - -| M. | 31 | 143-23] 58-904] 18 | 186! 7} 1 | 24 
June 28,1901, - -| IL. | 19 | 19-26 | 74-103] 21 22 | 88 aN: 
2 | 29-36 ¥ bs i. . a Be 
6 54-60 | 214-23} 
July 30, 1901, - I. Bi 6-5 2% 52 a oe ie 4 
Il. 43 | 16-7-28) 6§-11 23 23 9y'5 1 4 
III. | 26 | 29-3-46/11,4-183] .. + » 2 | 4 
1 | 498 
July 31,1901, - -| I. | 32 [16-7-27-9) 6g-11 | 19-23 | 225] 8; Te, |:4 
