FALSE ANNULUS 

 TRUE ANNULUS 





A. Scale of yearling bluegill showing true annulus, and false annulus forming on the edge; fish caught July 25, 1939; age, 14 months. 

 B. Scale of a yearling bluegill caught on September 22, 1939, age, 16 months, showing well-defined true and false annuli. 



PLATE 3 



