312 Part III. — Twenty-fourth Annual Report 



The Table embodying the references to the collections of the Garland 

 and the above measurements shows generally the same features. 



One sees the various groups, the spring series and the autumn series, 

 as well as the older ones (B). At A, there is no doubt about the clupeoids 

 representing the herring, but later, as at C, the sprat is doubtless present, 

 aud the smaller fishes represented in July may also be sprats. 



In the Tables and curves appended to this paper (Tables I. -III., Plates 

 XVII.-XTX.) it will be seen that the groups of herrings are well 

 separated from one another, comparatively little admixture of the spring 

 and autumn herrings taking place — though it does occur — and the eluci- 

 dation of the rate of growth of the herring would be an extremely simple 

 matter if it were not for the existence of these two series, one derived 

 from spring aud the other from autumn. 



In dealing with the post-larval herrings, I have had the advantage of Dr. 

 Williamson's experience in their diagnosis, and I have to thank him for his 

 assistance in this respect and for measuring a number of these collections. 



Place and Date. 



Depth. 



Series. 



Number. 



|| 

 X 



V 



c 



V 

 ht 



4) 



5= 



5 



Average Size. 



Origin. 



Probable 

 Age. 



Modal. 



Mean. 



Arith- 

 metic. 



Inches. 



Aberdeen Bay. 

 11th Feb. 1905 . 



Fms. 

 8-12 



III. 



3 



Mm. 

 100-115 



Mm. 



Mm. 



Mm. 

 



Mm. 

 



435 



- 





Mths. 



29th March 1905 . 



18-25 



V. 



1 



3 



125 



165-195 













24th April 1906 . 



4-6 



II. 



157 



41-46 



5 



43-5 



43-5 



It 



6| 



A 



8 



30th May 1901 . 



12-16 



IV. 



598 



142-186 

 196-228 



44 



159 



164 



162 



S 

 S 



38£ 

 50^ 



June 1904 . ... 



II. 



24 



50-60 



10 



55 



55 



55-8 



2A 







19th June 1900 . | 1 



II. 



15 



55-65 



118-163 

 164-182 

 208-234 



10 



60 



60 





2| 







13th June 1903 , 



8-10 



IV. 



V. 



523 

 30 

 4 



45 



138 



140-5 



141-8 



5| 



A 



S 



33 



28th June 1901 . 



m 



IV. 



650 



148-192 



44 



167 



170 



1689 



m 



8 



39£ 



5th July 1901 



10 



IV. 



8 



140-164 



24 



140 







150 



149-2 







18th, 20th Sept. '00 



2-3 



I. 



194 



21-44 



23 



33 



325 



34-3 





S 



6 



2nd October 1901 



10 



I. 



297 



9-20 



11 







15 





A 



Mi 



3rd October 1901 







334 



8-27 



19 



17 



17 5 



16-2 



H 



A 



i-H 



18th October 1901 



7-10 



II. 

 III. 



IV. 



1 



429 

 14 



85 



96-141 

 143-187 



45 

 44 



115 



115 



117-5 



44 



A 



25 



S=Spring. A=Autumn. 



