of the Fishery Board for Scotland. 



135 



for the most part caught by the mouth or the inner surface of the lips. 

 The proportions for each kind of hook are as follows :— 





Size of Hook. 



"Nn 7 



Xl u. o. 



"Nn 1ft 



X> U. XU. 



Xi u. xo. 



Nn 1 Q 



XN U. 1 p . 



No. 20. 



Haddock. 















oaugnt by pharynx, . 



3 



14 



78 



131 



128 



276 



Til AIT^" n 

 IIIUULI1, . 



41 



59 



133 



96 



128 



140 



outside of 















lip, . 



1 



4 



1 9 



X u 



ift 



« 

 o 



t 



, , skin or gills, 



2 



Q 



if 



A 

 He 





Q 

 O 



O 



Cod. 















Caught by pharynx, • 



0 



A 



in 



1 0 



1 K 



t 



m An i"Vi 



I, j, IliUULIIj • 



3 



2 



7 



11 



9 



14 



,, outside of 















Up, . . 









1 







,, skin or gills, 



1 







1 







Whiting. 















Caught by pharynx, . 









2 



1 





,, mouth, 



1 





2 





2 



4 



,, ,, outside of 















lip,!- • 













1 



„ ,, skin or gills, 











1 





Another point investigated was the minimum and maximum sizes of 

 the various kinds of fish caught by the different hooks ; and it was 

 found that, although the greater proportion of the smaller fishes were 

 taken by the hooks of least size, the largest hooks also captured very 

 small fishes. Conversely, the smallest hooks sometimes caught relatively 

 large fishes. There is not, therefore, anything like the uniformity 

 between the apparatus of capture and the size of the fishes caught in 

 line-fishing, as there is in trawl-net fishing, in which variation in the 

 size of the mesh has a profound influence on the size of the fishes taken. 

 The minimum and maximum sizes caught by the different kinds of 

 hooks are given in the following table : — 



Showing the Maximum and Minimum Sizes of Fishes captured by the 

 different-sized Hooks. 



No. of 

 Hooks. 



Haddocks. 



"Whiting. 



Cod. 



Common Dabs. 





Max. 



Min. 



Max. 



Min. 



Max. 



Min. 



Max. 



Min. 



7 



20 



4 



HI 



7 



24 



9 



12 



10 



8 



18^ 



8 



13 



8 



46 



13 



9 



8 



10 



21 



7 



14 



6 



18 



8 



11 



7 



18 



15£ 



6* 



12 



5 



42 



7 



12 



5 



19 



17 



7 



12 



7 



28 



9 



10£ 



7 



20 



20 



7 



15 



5 



31£ 



8 



13 



6 



The results of these experiments show that it would not be practicable 

 to avoid the capture of immature round fishes by the use of a larger 



