A7 
Channel and a portion of the Mersey estuary lying above 
the Liverpool Landing Stage are also fished on. 
Now with regard to the relative quantities of shrimps 
and immature fishes caught in the shrimp trawl, con- 
siderable differences exist on different parts of the whole 
area referred to above. We have, therefore, separated the 
hauls taken on the portion lying seaward from Burbo 
Bank and south of Queen’s Channel from the portion 
including Queen’s, Formby, Crosby and Horse Channels, 
and the eastern part of Rock Channel. For convenience 
the former portion will be referred to hereafter as Area A 
and the latter as Area B. The hauls taken on Area A 
are abstracted in Table I., those taken on Area B on 
Table II. 
In Plate B we have represented graphically the results 
of Tables III. and IV. The method adopted has been 
to take each fish separately, and to superpose the curves 
representing its distribution on the two sub-divisions of 
the shrimping ground referred to above. Curves L., IL., 
IIl., IV., and V. represent the variation from month to 
month in the numbers of immature whiting, plaice, dabs, 
soles and shrimps taken per average haul. In all these 
curves the number plotted along the vertical axes repre- 
sent these average hauls; months are represented on the 
horizontal axes. The vertical seale of L., I1., and III. is 
the same; the corresponding scale of IV. is one-tenth, and 
\. one-twentieth that of I. This change of scale has beea 
necessary on account of the small values dealt with in 
IV. and V. In all the curves the thick line represents 
the average hauls on Area A, the thin line the average 
hauls on Area B. It ought to be remembered that the 
fishes dealt with in these tables and curves are nearly al! 
immature. The hauls quoted on pp. 42-5 represent fairly 
their average sizes. 
