25T 



Size of oysters JanJ3f^ 

 // rnonths olcL. 



ii i'^ 



44 ~ 5 



Size of oysters June13L 

 iG months old. 



5^ 



iins 



3t2e ofoif^t&rs Seat 1312. 

 19 rnonth^ old 



Plate IX. — Cxirves show: 



ing sizes of 1911 Oysters iii January, June, and September, 1912. 



