32 MASS. EXPERIMENT STATION BULLETIN 319 



Table 6. — Behavior of variants in different concentrations 

 of sodium chloride. 



♦Refer to Table 4 for history of variants. 

 ♦♦Turbidity equal to tube 1 of McFarland nephclomcter scale. 

 Legend: CS — complete settling 

 PS — partial settling 

 SS — slight settling 

 — no settling 



