Table 9. — Incidence and Degree of Tuberculosis Infection in Salmon 

 Egg-Collecting Stations, 1957 



and Steelhead Returning to Hatchery 



1/ By weighting samples throughout season, a calculated 59 percent of the run was tuberculous. 

 2/ Spring Chinook and fall Chinook not separated. 

 3/ Egg-collecting station for Bonneville Hatchery. 



30 



