3 
Duration of Expos 
Figure 2. 
| 2 Sy GY 6) 10 20 30 40 50 60 
Concentration (gf) of Fuller's Earth in Suspension 
Effect of fuller's earth on white perch, LCo99 (solid 
points), LCs5q (open points), and LCjg (x). Dotted line 
indicates 48-hour exposure, the maximum duration of 
exposure. 
