Table 2. --Degree in incidence of acid-fast bacilli infections in sockeye salmon 

 spawned under natural conditions in the Okanagan River 



Degree of 

 infection* 



Sex 



Average length in inches 







1 

 2 

 3 

 4 

 5 



19.8 



19.6 



Total No . of 

 observations 



Total No. infected 



24 



26 



10 



50 

 18 



Percent infection = 



36 



*1. 

 2. 

 3. 

 4, 



5. 



--one to 20 organisms per slide 

 --over 20 organisms per slide 

 --one to 25 organisms per field 

 --25 to 150 organisms per field 

 --over 150 organisms per field 



(each slide examined five minutes} 



Table 3. --Degree of incidence of acid-fast bacilli infections in female fall chinook 

 salmon collected at random at the Little White Salmon station 



Total No. of 

 observations 



Total No. infected 



Percent infected = 11.2 



43 

 3 



100 

 15 



18=167 

 3=22 



