126 



TRANSACTIONS LIVERPOOL BIOLOGICAL SOCIETY. 



laying down of the 1st and 2nd rings. But that is only the case 

 with the 2-ringed scales : in the 8-ringed ones only 26*3 % of 

 the ringed portion is laid down between the dates of formation 

 of the 1st and 2nd rings. This curious effect can be observed 

 throughout the tables (if one allows for the errors of the means 

 it is quite general). It seems as if the whole scale shrinks up 

 in the older fish and shrinks the more, the older the fish is. 



Further, there is an obvious difference between the June 

 and September samples. 



These results appear to have important bearings, but it 

 will be advisable that other investigations, which are in progress, 

 be made before a full discussion is attempted. 



Table III. Showing Length -Ring frequency. 





June Sample. 



September Sample. 



T.cd. 



Rings. 



Rings. 



Length. 



1 



2 



3 



4 



5 



6 



1 



2 



3 4 



5 



6 



7 



8 



9 



mm. 

 181-190 

 191-200 

 201-210 

 211-220 

 221-230 

 231-240 

 241-250 

 251-260 







8 

 38 

 45 

 11 



4 



7 

 22 

 29 

 11 



"i 



'2 

 1 

 4 

 4 



... 



1 



1 





*3 



2 

 8 



1 



... 



1 

 4 

 3 

 3 



2 



2 



18 

 25 



5 



17 



38 



18 



3 



"i 



9 



25 



17 



1 



2 

 8 

 8 



6 

 6 









106 



70 



11 



1 



2 





14 



13 



50 



76 



53 



18 



12 



1 



June. 



September. 



mm. 





mm, 



Mean length of fish with 2 ring scales = 202 



Mean length of nsh with 2 ring scales = 210 



3 „ =202 



3 



= 226 



4 „ =214 



4 



= 232 



5* „ =225 



5 



= 236 



6* „ =238 



6 



= 237 





7 



= 238 





8 



= 240 





9* „ 



= 245 



example. 



