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Contents. 



PAGE 



XII. On the Growth and Age of the Herring (Clupea harengus). By 

 T. Wemyss Fulton, M.D., F.R.S.E. (Plates XVII.-XIX.), 



1. Previous Opinions and Observations, . . 293 



(a) English Authors, . . . .293 



(6) Scandinavian and Dutch, . . . 294 



(c) Meyer and J enkins, .... 295 



(d) Masterman and Cunningham, . . . 298 



2. The Size of the Herring when it first attains Maturity, 299 



3. The Maximum Size attained by the Herring, . 301 



4. The Spawning-Periods of the Herring, . . 302 



5. The Duration of Embryonic Development : Rela- 



tion to Temperature, .... 303 



6. A Criticism of Meyer's Conclusions and Observations, 304 



7. The Scottish Collections, . . . .307 



(a) Larval and Post-larval Stages, . . 308 



(6) The Annual Groups, . . . .323 



8. Conclusions, ...... 334 



9. Literature, ...... 338 



10. Description of Plates, .... 338 



