ftvi^uit. Stifttmber October 



l)i;ismm ]y. Sliowiiifr the niti- of sniwtli of scVcteil sizes of clams, reg-avfllpss of age. (Soe Exppnmpnt Xo, s.i 



A. Clam: 



li. Claiiii 



c. Clami 



1>. I'laiiii 



K. riain: 



F. Clani: 





uudiT 1 iiicli in leiiBlli. 



11 liMiatli. 

 11 len^'tli. 



leiiKtli. 



l.-ii«lli. 



