of the Fishery Board for Scotland. 



73 



Plate IX. 



Figs. 1 & 2. — Shows stones with Herring eggs attached, dredged from the 

 Ballantrae Bank (Station XII. PI. VI.). Eggs on fig. 1 

 hatched on the 18th March. 



Fig. 3. — Shows a layer of Herring Eggs, half an inch in thickness, 

 attached to gravel from the Ballantrae Bank. It has not 

 been possible to show distinctly the open arrangement of the 

 eggs in conical heaps. 



Fig. 4. — Shows the under surface of a similar layer of Eggs, with the 

 pieces of gravel to which they adhere. 



Fig. 5. — Shows Eggs arranged as in fig. 3 on a piece of Laminaria. 



Fig. 6. — Shows a continuous ribbon of Eggs, expressed from a living 

 Herring on to a piece of glass. 



Fig. 7. — Shows the form assumed by Eggs some time after they escape. 



Herring fry developed from artificially fertilised eggs fixed to 

 glass plates, as shown in this figure, were exhibited at the 

 Royal Society, London, on Thursday, 27th March 1884. 



Fig. 8. — : Shows a portion of Trammel Net dredged from the Ballantrae 

 Bank, which contained some living herring, and a large 

 number of dead herring at various stages of decomposition. 

 The group of eggs figured was near a female herring, which 

 had spawned after it was taken, but the eggs had not been 

 fertilised. Small groups of eggs, which had been carried 

 away by the currents, were attached to the net for some 

 distance at each side of the large group shown. 



