of the, Fishery Board for Scotland. 



165 



a full share ; the second that it was a female of adult size and may have 

 spawned. It was unfortunately omitted to provide apparatus in the 

 overflow from the tank to obtain evidence as to this. 



The observations in Tank No. 1 refer to growth under the ordinary 

 temperature of the season. 



Tank II. 







Mean Temperature 

 5-2° C. (41-4° P.). 



Mean Temperature, 

 9-2° C. (48-6° P.). 



Mean Temp., 

 7° C. (44-6° F.). 



Fish. 



Length. 



100 Days Later. 



55 Days Later. 



Increase in the 

 155 Days. 





Increase. 





Increase. 





Mean 









Length. 



Total. 



Mean 

 per 10 

 Days. 



Length. 



Total. 



Mean 

 per 10 

 Days. 



Total. 



per 1U 

 Days. 



Whitings. 

 1 



Mm. 

 179 



Mm. 

 193 



Mm. 

 14 



Mm. 

 1*4 



Mm. 

 207 



Mm. 

 11 



Mm. 

 2*54 



Mm. 



28 



Mm. 

 1-81 



2 



178 



192 



14 



1-4 



202 



10 



1-82 



24 



1-55 



3 



170 



185 



15 



1-5 



196 



11 



2-0 



26 



1-68 



4 



160 



179 



19 



1-9 



192 



13 



2-36 



32 



2-06 



5 



151 



173 



22 



2 2 



187 



14 



2-54 



36 



2-32 



6 



151 



171 



20 



2-0 



184 



13 



2*36 



33 



2-13 



7 



148 



164 



16 



1-6 



181 



17 



3-09 



33 



2-13 



8 



145 



160 



15 



1-5 



177 



17 



3 09 



32 



2-06 



9 



140 



159 



19 



1-9 



176 



17 



3-09 



36 



2-32 



10 



138 



158 



20 



20 



171 



13 



2*36 



33 



2-13 



11 



134 



154 



20 



2-0 



170 



16 



2-91 



36 



2-32 



12 



134 



152 



18 



1-8 



164 



12 



2-18 



30 



1-93 



13 



[131 



151 



20 



2-0 



154 



3 



•5 



23 



- ] 



14 



[130 



150 



20 



2-0] 













15 



[109 



128 



19 



1-9] 













Average - 



152-3 



170-0 



17-7 



1-77 



184-0 



14-0 



2-55 



31-7 



2-04 



Haddock. 

 1 



193 



211 



18 



1-8 













2 

 3 



180 

 178 



199 

 197 



19 

 19 



1-9 

 1-9 













Average, - 



183-7 



202-3 



18-6 



1-86 













Com. Dab. 

 1 



241 



248 



7 



0-7 



251 



3 



•55 



10 



•07 



2 



146 



168 



22 



2-2 



190 



22 



4-0 



44 



2-84 



Average, - 



193-5 



208 



14-5 



1-45 



220-5 



12-5 



2-27 



26 



1-68 



Starry Ray. 



198 



198 



o-o 





195 



-3 





-3 





