of the Fishery Board for Scotland. 169 

 Tank IV. 







Mean T 

 12-3° ( 



EMPERATURE, 



). (54-1° P.). 



Mean Temperature, 

 12-9° C. (55-2° F.). 



Mean Temp. 

 12-5° C. (54-5° F.). 







100 Days later. 



55 Days later. 



Increase in the 

 155 Days. 



Fish. 



Length . 









































Increase. 





Increase. 





Mean 







Length. 



Total. 



Mean 

 per 10 

 Days. 



Length. 



Total. 



Mean 

 per 10 

 Days. 



Total. 



per 10 

 Days. 



Whiting. 

 1 



Mm. 



241 



Mm. 

 260 



Mm. 

 19 



Mm. 

 1-9 



Mm. 



269 



Mm. 



9 



Mm. 

 1-64 



Mm. 



28 



Mm. 

 1-81 



2 



208 



229 



21 



2-1 



242 



13 



2-36 



34 



2-19 



3 



204 



225 



21 



2-1 



239 



14 



2-54 



35 



2-26 



4 



177 



203 



26 



2-6 



220 



17 



3-09 



43 



2-77 



5 



101 



193 



32 



3-2 



209 



16 



2-91 



48. 



3-09 



6 



157 



186 



29 



2-9 



204 



18 



3-27 



47 



3-03 



7 



146 



180 



34 



3-4 



197 



18 



3-27 



52 



3-36 



8 



140 



171 



31 



3-1 



190 



19 



3-45 



50 



3-22 



9 



140 



174 



34 



3-4 



192 



18 



3-27 



52 



3-36 



10 



164 



192 



28 



2-8 













11 



158 



186 



28 



2-8 















Average. < 

 I 



172-4 



199-9 



27-5 



2*75 













174-9 



202-3 



27-4 



2-74 



218 



15-7 



2-85 



43-1 



2-79 



Codling. 

 1 



173 



225 



52 



5-2 



278 



53 



9-64 



105 



6-77 



2 



126 



167 



41 



41 



221 



54 



9-82 



95 



6-13 



3 



120 



166 



46 



4-6 



220 



54 



9-82 



100 



6-45 



Average, 



139-7 



186 



46-3 



4-63 



239-7 



53-7 



9-76 



100 



6-45 



Com. Dab. 

 1 



245 



262 



17 



1-7 



276 



14 



2-55 



31 



2-0 



2 



151 



186 



35 



3-5 



207 



21 



3-82 



56 



3-61 



3 



147 



185 



38 



3-8 



202 



17 



3-09 



55 



3-55 



4 





206 







237 



31 



5-64 







Average, 



181 



211 



30 



3-0 



228-3 



17-3 



3-15 



47-3 



3-05 



Plaice, 



226 



258 



32 



3-2 



277 



19 



3-45 



51 



3-29 



Pogge, 



127 



127 

















It will be noticed from the Table that the increments of growth were 

 much greater in the smaller forms than in the larger. 



