442 



A 



B 



I-lM. III. IndicutinK tlml a«o and doKrce of injury do not influonrc differentiation in tlu- .v 

 «,.n.r..i,on of lish scales. (A) from the larKest fi.sh. 114 m.u.. (B) fron. the smallest, ,2 m.m. (C) 

 lr.,iu one of (he lish in series C which were entirely denuded of scales. 



