202 Part III—Twenty-fourth Annual Report 
The next series is represented in a collection from Aberdeen Bay in 
October, and in it there are ten turbot from 27'5cem. to 30cm. (102-11? 
inches), which are a year older. 
The other series are shown in the Moray Firth collections in November, 
December, and F ebruary, the sizes ranging from 33cm. to 80em. From 
Table XVII. it will be seen that a division appears to exist at 34—35cm., 
and it is probable that this group extends back at least to 30:5em., as 
indicated in the October series. 
The arrangement of the measurements in one-centimetre groups may 
be shown in the subjoined Table, in which column 4 summarises the 
figures for the three months, October, November, and December, and 
column 6 summarises them all :— 
1 2 3 4 5 6 
Cm. : pare See 
Oct. Nov. Dec. ae a Feb. ger ies 
23 - = 1 1 = 1 
24 = ms a = a = 
25 - = = = - - 
26 2 = = e s 
27 2 = - 2 = 2 
28 2 x = 2 3 2 
29 4 = 4 = / 
30 2 = = 2 e- 2 
3 it = = i - 1 
82 = z ¥. ~ = ie 
33 - 2 2 4 - 4 
34 - 2 1 3 - 3 
BD - 1 - i 1 
36 - 5 5 10 = IO 
37 - 5 2 7 2 9 
38 - 5 3 & 1 9 
39 : 4 = 5 2 6 
40 - 2 - 2 2 4 
41 - 1 il 2 2 4 
42 = = = = v 2 
43 2 . 2 2 
44 ~ 4 2 6 - 6 
45 - 4 3 7 4 Il 
46 _ = = 2 2 
47 ~ 1 _ I 1 g 
48 - 1 - 1 - i 
49 - 2 = 2 - 2 
50 - 1 - 1 2 By 
51 2 = = = = a af 
52 - - 1 if - 1 
There appears to be evidence in this Table of the existence of at least 
five groups, and possibly six, if those turbot under 34cm. in November 
and December are regarded as separate from the October group. The 
points of probable separation of the groups, as shown in the ‘dem. 
grouping, are 34-35:5cem., 46cm., and 50cm., or 52cm. 
The age of these turbot is considerable in any way the figures may be 
regarded. It is possible that they represent fish of 43, 53, 64, 71, 84, 
and 93 years of age; but they may be a year less, and, if the October 
group is looked upon as terminating at about 34cm. in November and 
December, the fishes above that size may be a year less still. 
It, however, seems certain that turbot ranging from 35cm. to 4lem. 
