oj the Fishery Board for Scotland. 



19 



Some of the herrings from Ballantrae Bank were running. 



A number of spents appeared in certain of the samples. Some of these 

 were jvist spent, while others had spawned some time previously ; this fact 

 was indicated by the condition of the reproductive organs, which were 

 shrunken a little and recovered to some extent. 



If the herrings with developing reproductive organs be combined, we 

 shall have a complete series of ovaries from the immature up to the ripe 

 condition, and having ova from -1 up to I'S mm. T assume that the 

 herrings that are just starting to develop with eggs, say, '25 mm. in 

 diameter will spawn in summer. And as some of the herrings are spawning 

 at present, it would seem to prove that spawning must take place con- 

 tinuously from winter to summer. 



Comparatively large eggs are found in small ovaries of fishes 17 to 21 

 cm. in length. Eggs -3 mm. in diameter were found in ovaries 3 and 4 

 mm. broad ; eggs '4 mm. in diameter, in ovaries 4-6 mm. broad ; eggs 

 •5 mm. in diameter, in ovaries 5-7 mm. broad ; eggs '6 mm. in diameter, 

 in ovar-ies 7 and 8 mm. broad ; eggs "8 mm. in diameter, in ovaries 9 and 

 10 mm. broad; eggs "9 mm, and upwards in diameter, in ovaries 10-J7 

 mm. broad. 



* Herrings from Clyde and West Coast. 



t Herrings from Clyde, West Coast, and East Coast. 



March. 



Clyde. — Campbeltown, off Isle of Ross, 4th March 1908 : — 54 W. Spt., 

 24 to 29 cm. 



Clyde. — Campbeltown, Mouth of Loch, 11th March 1905 : — 2 W. Spr., 

 F. c?., 24, 26 cm.; 22 W. Spt., 21 to 27 cm. 



