CONTENTS. 



General Statement, , . . . . 



The Hatching of Plaice, ..... 



The Fishery Statistics, . . . . . 



Investigations on the Herring Fishery of the Firth of Clyde, 

 The Herrings of the Clyde and other Districts, 

 The Influence of Temperature on the Development of the Eggs of 

 the Herring, ...... 



Scientific and Technical Instruction to Fishermen, . 



PAGE 



5 



9 

 10 



11 

 11 



SCIENTIFIC REPORTS. 



I. On the Herrings of the Clyde and other Districts. By H. Chas. 

 Williamson, M.A., D.Sc, F.R.S.E., Marine Laboratory, 

 Aberdeen, ....... 13 



Introduction, . . . . . .13 



Arrangement of Analysis, , . . . .14 



List of Contractions, . . . . .14 



The Samples of Herrings, . . . . .15 



The Weight of the Herring, . . . .50 



The Stage of Development of the Reproductive Organs, . 54 

 The Rate of Growth, ..... 57 



The Spawning Seasons, . . . . .65 



Food, ....... 65 



Literature, . . . . . . .66 



Additional Samples of Herrings, . . . .67 



II. Report on the Operations at the Marine Fish Hatchery, Bay of 

 Nigg, Aberdeen , in 1908. By Dr. T. Wemyss Fulton, F. R. S.E. , 

 Scientific Superintendent, . . . . .68 



III. Notes on the Distribution of Pelagic Crustacea in Lower and 



Upper Loch Fyne. By Thomas Scott, LL.D., F.L.S., . 74 



IV. Experiments to show the Influence of Cold in Retarding the 



Development of the Eggs of the Herring (Clupea Harengus, 

 L.), Plaice (Pleuronectes Platessa, L.), and Haddock {Gaclus 

 ^glefinus, L.). By H. Chas. Williamson, M.A., D.Sc, 

 F.R.S.E., Marine Laboratory, Aberdeen. (Plate I.), . . 100 



Introduction, ...... 100 



The Different Lots of Spawn, .... 101 



Lots I., IL, and in. , . . '. . .103 



