of the Fishery Board for Scotland. 53 



Average Weight {grammes) of Herrings. 





Clyde. 



East Coast. 



Length. 



Oct. 



Nov. 



Dec. 



August. 



September. 



cm. 



All 

 All 



Herrings. 



A 11 

 All 



Herrings. 



A 11 

 All 



Herrings. 



Herrings 

 other 

 than 

 S. Spt. 



S. Spt. 



Herrings 

 other 

 than 

 S. Spt. 



S. Spt. 







1 A 



14 











*24 



_ 



21 











15 





32 



23 











lo 





33 



*29 











17 





42 



35 











lo 





48 



42 











19 



56 



60 



50 











on 



62 



68 



64 - 











zl 



72 



81 



75 











ho 



86 



90 



86 



90 





*97 





no 



Zo 



101 



104 



98 



1 04. 





1 1 o 



Q4. 

 v± 



Z4 



116 



121 



118 



121 



Ill 



*126 



105 



OK 



ZD 



131 



133 



132 



133 



113 



131 



118 



26 



150 



149 



152 



148 



123 



159 



122 



27 



165 



173 



165 



175 



135 



167 



132 



28 



204 



197 



*203 



198 





177 



143 



29 



193 



228 



212 



221 





205 



156 



30 



279 



271 



- 254 



247 



*184 



220 



176 



31 



293 



295 



276 



265 





254 





32 



300 



327 



306 



271 





*266 



*176 



33 







*314 











Total number of 

 herrings weighed 



201 



238 



245 



150 



25 



58 



86 



* One specimen. 



The herrings got in Upper Loch Fyne in December are rather less in 

 weight than those got there in November ; but there is not much material 

 upon which to found. 



In some cases of fishes of the same length, the heavier herring sometimes 

 had a larger reproductive organ ; in other cases it had a smaller organ. 

 Milroy gives the weights of a number of herrings from Loch Fyne during 

 the period May to December. The weights of the reproductive organs are 

 also shown. The paper was mainly concerned with the chemical composi- 

 tion of the herrings in different seasons. Milroy says : — " In the summer 

 fish from Loch Fyne, when the ovaries are in an immature condition the 

 fat percentage was usually about that which is given as the average for 

 the herring. The fat percentage of the herring muscles therefore continues 

 rising during the three months probably of August, September, and 

 October. It begins to fall slightly in November, markedly in December, 

 most markedly during spawning, and continues at a low level until the 

 fish begins to feed again." [The fish probably begins to feed immediately 

 after spawning]. " The fat percentage of the ovaries is highest in Loch 

 Fyne herrings between the months of July and September." 



The weight of a number of herrings measuring from 2 to 32 cm. in 

 length is given by Fulton in his paper, "On the Rate of Growth of 

 Fishes." 



