240 Part IL1—Twenty-fourth Annual Report 
On 8th October another collection contained four of the first group. 
They varied from 5:7cm. to 85cm. The second group consisted of 15 
fishes, from 10°9cm. to 17°4em. (4,°,—-63 inches); the mean was 14-5cm., 
and the average 14°49cm., or 5? inches. 
A third series was represented by five fishes, from 21:3cm. to 22°7cem., 
the average being 21°72cm., or 8,% inches. The smaller fishes of the 
series were not present. 
Another collection, from the Dornoch Firth on 5th and 11th November, 
may be referred to. The first group contained 82 gurnards, from 5:9cm. 
to 11*3em. (2,9;-4,7, inches) ; the maximum number were at 8cm., the 
mean was about 8-3cm., and the average 8-44cm., or 3,% inches. 
There were eleven gurnards in the next group, the sizes ranging from 
12‘lem. to 18-5cem., (43-7,°; inches); the mean was 15cm., and the 
average 14°98cm., or 512 inches. The apparent growth in the year from 
the preceding generation was thus 6:54cm., or 2, inches. 
The third series contained ten fishes, from 19°2cm. to 21-5cm. (749,837 
inches). The maxinmium number were at 2lcm., and the average was 
at 20°62cm., or 83 inches. These fishes were in the middle of their third 
year; the apparent growth from the previous series was 5°64cem., or 2,3, 
inches. 
The other groups were represented by a few fishes. An examination 
of the figures in the Tables appended will show that the growth in the 
Firth of Forth in 100 days, from the early part of May to the middle of 
August, amounted for the first group, that is, fish about a year or more of 
age, to 3cm., or 1,3, inches. Precisely the same amount is indicated for 
the growth of the corresponding series in 100 days, from the beginning of 
July to the middle of October, in Aberdeen Bay. The older group, fish 
about two years or over, increased also by 3cm., in the 100 days in the 
Forth, and by 1:83cm. in 25 days and 1:29cm. in 76 days in Aberdeen 
Bay. 
SERIES I. SERIBs II. 
Number 
Date and Place. a 
ran sere | Increase. Tee Increase. 
Cm. Om. Cm, Gat 
ABERDEEN Bay. 
Summer. 
Sth July, — : i ; 3 - 11°56 - 16°90 = 
30th-3lst July, .- ‘ c 25 (13°49) 1:93 18°73 1°83 
20th September, . : - 76 14°57 3°01 20°02 1:29 
13th October, . , : 100 14°63 3°07 - - 
Winter. 
5th July, . - ; ; 265 16:90 2:27 - - 
FIRTH OF FORTH. 
Summer. 
9th-13th May, . ; ; - 101 - 16-2 = 
28rd July, . : c 5 73 12:40 2:29 fal 0:9 
16th-21st August, ; re 100 13:14 3°03 19°26 3°06 
Winter. 
9th-13th May, . ; ; 265 16°21 3:07 21°54 2°28 
