These data are summarized In table 12. May 20 Is about a month earlier than the mean 

 date determined by Hansen for annulus formation In the white crapple.* 



TABLE 12.— NUMBERS OF LARGEMOUTH BASS WITH 

 AND WITHOUT NEW ANNULI ON MAY 20, 1938, SPORTSMEN'S LAKE. 



There Is a tendency for the larger bass of an age group to form their annual ring 

 before smaller bass of the same age. This may be seen In table 13. 



Some of the bass which escaped the first poisoning In Sportsmen's Lake spawned 

 within the next week or two; large numbers of Inch-long fry were killed by the second 

 poisoning, June 14. This seems to Indicate a close correlation between the time of 

 annual ring formation and the time of spawning. 



TABLE 13.— NUMBERS OF BASS OF DIFFHIENT LENGTHS WITH AND 

 WITHOUT NEWLY-FORMED ANNULI, MAY 20, 1938, SPORTSMEN'S LAKE. 



Fish are often described as plump or thin, but Investigators have devised a more 

 accurate method of measuring condition by dividing the weight of the fish by the cube 



» Hansen, Donald F., 1937. The Date of Annual Ring Formation In the Scales of the Whl' 

 Grapple. Trans. Am. Fish. Soc, 66:227-36. 



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