186 Past IIT —Twenty-fourth Annual Report 
The measurements of the plaice in these four series of collections, 
reduced to percentages, are as follows :—- 
1903. 1901. 
Cm. ees 
June. July July. August. 
1 - - ak - 
3) 13:3 a) 1:3 ~ 
2 35°3 8-9 73 - 
5 25°7 32°8 30°2 = 
3 173 871 29°3 - 
a) 4°6 145 17°4 1:8 
4 1:8 3°3 87 9°0 
45 14 1:8 36 12°6 
5 - iat 17 2071 
a) - fy “4 16°9 
6 - - 03 13-1 
5 - | - - 10:2 
7 - - = 73 
5 - - - 4:7 
8 - - - 2:5 
#3) - ~ - 1:4 
4) - - - 18 
The features are also shown in the curves. It is probable from an 
examination of the individual collections that the larger forms are not 
sufficiently represented. They no doubt move out into somewhat deeper 
water even at this early stage, and in part get beyond the depth at 
which a man wades in using the push-net at low tide. 
ABERDEEN Bay. 
A number of collections were made in Aberdeen Bay by means of a 
small fine-meshed shrimp net, used from a yawl, in depths usually 
ranging from 3 to 6 or 7 fathoms. The measurements of these 
are grouped in ‘5 centimetres in Table IV., and it is apparent that, 
though the numbers of fish are in no case large, three annual series or 
generations are at least indicated. Thus, there is represented a series 
ranging from 2cm. to 9cm. or 10cm. or a little more ; another from 15cm. 
or 16cm. to 24cm. or 25cm., and a third from about 27cm, to 34cm. 
These are best seen in the aggregates for March, April, and May, which, 
with those for September and November, as grouped in centimetres 
measure as follows :— 
| TABLE, 
