89 



ill the following years. Those with three winter rings of 1914 

 had practically the same first year growth as the fish with four 

 winter rings in 1915. But in 1916, when the herrings had five 

 winter rings, this year class gave a smaller first year growth 

 than in previous years. The data are as follows : — 



Percentage at Centimetres. 



,, Winter 



\ear. ^-. 4 o 



Kings. 



1913 2 — — 0- 



1914 3 01 1 



1915 4 _ _ _ 



1916 5 6 10 1 



The herrings with two winter rings in 1914 had, like those 

 of the previous year, a higher first year growth than the fish of 

 three winter rings in 1915, which had also a larger first year growth 

 than the herrings with four winter rings in 1916. The herrings 

 with five winter rings in 1917 had a growth the same as the herrings 

 of four winter rings of 1916. 



The particulars of the first year growth of this year class here 



follow : — 



Percentage at Centimetres. 



Year. ^^J^^^^ 4 3 6 7 8 9 10 11 12 13 14 

 Rings. 



1914 2 — — 0-4 4 10 16 20 27 15 6 1 



1915 3 — 1 4 14 29 21 20 8 1 2 — 



1916 4 2 * 7 14 23 24 18 6 3 08 — — 



1917 5 1 5 11 22 27 23 8 3 — — — 



There were only 55 herrings with two winter rings in 1915, 

 and the first year growth made by these was greater than the 

 average for the two previous years, but not greater than that found 

 in some of the sample of 1914, when it has been seen the first jeaT 

 growth of herrings of this age varied with the number present in 

 the samples. Unlike the two previous year classes considered 

 above, the herrings of three, four and five winter rings have 

 practically the same growth for the first year, the data being as 



follows : — 



Percentage at Centimetres. 



11 12 13 14 



11 



* In 1915, only one sample of the Northumberland Coast herrings was examined. It 

 contained thirty -eight fish wth four winter rings. 



