20 



Part III. — Twenty-seventh Annual Report 



Clyde.— Campbeltown, Kildalloig Bay, 24th March 1903 :— 27 W. Spt., 

 21 to 29 cm. : eggs, 'l-*2 mm. 



Clyde.— Campbeltown, Kildalloig Bay, 12th March 1907 :— 1 Imm. tf., 

 23 cm. : t, 3-5 mm. : fat, a little ; 1 Imm. dev. $, 22 cm : eggs, -35 mm. : 

 o, 4 mm.: fat, a little; 47 W. Spt., 22 to 28 cm. : fat, none, much. 

 Food was generally present, in some cases in large quantity, in the 

 stomachs. 



Clyde.— Machrie Bay, Arran, 24th March 1908 :— 10 W. Spr. F., 21 

 to 23 cm. ; 43 W. Spt., 21 to 28 cm. 



Clyde.— Ballantrae Bank, 13th March 1907 :— 42 W. Spr. F., 23 to 29 

 cm. : eggs, 1*1-1 -25 mm. : o, 17-23 mm. : t, 22, 26 mm. : fat, none, a trace ; 



1 W. Spt. c?., 27 cm. One full herring had food in its stomach. No food 

 was found in the other herrings examined. 



Clyde.— Kilbrennan Sound, Carradale, 26th March 1907 :— 83 W. Spt , 

 21 to 28 cm. : eggs, *12 and '15 mm. : fat, none. In the majority of cases 

 food (copepods and schizopods) was present. Some herrings had large 

 stomachs filled with these forms. 



Clyde. — Kilbrennan Sound, near Skipness Wharf, 27th March 1907: — 



2 Imm. 22, 23 cm. : t, 2*5, 3 mm. : fat, some; 1 Imm. dev. eggs, 

 '3 mm. : o, 4 mm. : fat, none ; 1 W. Spr. F. 21 cm. : fat, none ; 111 W. 

 Spt., 19 to 26 cm. : eggs, "l-*2 mm. : o, 3-9 mm. : t, 3-10 mm. : fat, none, 

 some ; 4 S. Spr., 22 to 24 cm. : eggs, '3--45 mm. : o, 4-6 mm. : fat, much, 

 none. 



West Coast.— Stornoway, 12th March 1907 :— 26 W. Spr. F., 26 to 

 31 cm. : eggs, 1-1-1-2 mm. : o, 20 mm. : fat, none; 26 W. Spt., 27 to 33 

 cm. : fat, none. Both full and spent herrings had big stomachs full of 

 schizopods ; in both classes some stomachs were empty. 



West Coast.— Loch Broom, 16th March 1905 :— 8 Imm., 18 to 22 cm.: 

 eggs, -15 mm. ; 1 W. Spr. F. 25 cm. ; 2 W. Spt., 22, 26 cm. ; 14 S. 

 Spr., 18 to 22 cm. : eggs, -25--35 mm. 



East Coast.— Anstruther, 25th March 1905 :— 31 W. Spr. F., 20 to 

 26 cm. 



Summary. 



Immature. — 18 to 23 cm. : eggs, -15 mm. : t, 2-5-3-5 mm. : fat, some. 



Imm. dev. — 22, 23 cm. : eggs, *3, '35 mm. : o, 4 mm. : fat, none. 



W. Spr. F.— 20 to 31 cm. : eggs, M, 1-2 mm. : o, 17-23 mm. : t, 22, 

 26 mm. : fat, none, a trace. 



W. Spt.— 19 to 33 cm. : eggs, -1--2 mm. : o, 3-9 mm. : t, 3-10 mm. : 

 fat, none, much. 



S. Spr. — 18 to 24 cm.: eggs, *25-'45 mm.: o, 4-6 mm.: fat, much, 

 none. 



Whiter Spawners. — In the hind part of the oviduct of the full herring 

 the ripe eggs were concreted together, and the eggs had, through mutual 

 pressure, assumed a spindle-shape. The germinal tissue between the ripe 

 eggs in the ovary contains eggs measuring from mm. in diameter. 



In the ripe testis the milt is in the form of a white pasty material. The 

 skin of the testis is ridged in the form of a honeycomb on its internal 

 surface ; blood vessels run through it. 



Winter Spents. — The spent fish is thin, slack in the abdomen, and very 

 often has no abdominal fat. When recently spent the reproductive organ 

 is very soft and flabby. In the ovary old eggs which had been ripe, but 

 which had not been extruded, may be found loose ; the other eggs present 

 in the ovarian tissue are minute, about "15--2 mm. in diameter. The 

 ovary soon shrinks to a small size. Some spent ovaries were as small as 



3 and 3*5 mm. in breadth. They may shrink to a flattened condition. 



