Immunity of Lower Organisms to Ethyl Alcohol 581 



Experiment III 



RESISTANCE OF STENTORS OF TYPE E TO 6 PER CENT ALCOHOL AFTER LIVING 3 DAYS IN I PER CENT ALCOHOt 



C Control 



A Three Days in I Per Cent Alcohol 



Seconds 



Exp. I cilia stop 225 



2 cilia stop 250 



3 cilia stop 225 



4 cilia stop 390 



5 ciila stop 435 



6 cilia stop 480 



7 cilia stop 535 



8 cilia stop 285 



9 cilia stop 595 



10 cilia stop 330 



Average resistance = 375 



Seconds 



Exp. I cilia stop 235 



2 cilia stop 250 



3 cilia stop 300 



4 cilia stop 320 



5 cilia stop 405 



6 cilia stop 330 



7 cilia stop 360 



8 cilia stop 240 



9 cilia stop 140 



10 cilia stop 240 



Average resistance = 282 



From this experiment at least two things are evident. First, 

 the resistance of normal animals of this strain is unusually high 

 as compared with that of type F, and secondly, the evidence for 

 immunity is far less marked. 



These animals, however, had remained in the acclimatizing 

 medium only three days. Possibly a longer period is needed for 

 the acclimatization of so strong a strain. 



The same series at the end of the fifth day gave the following 

 result: 



Experiment IV 



RESISTANCE OF 8TENT0RS OF TYPE E TO 6 PER CENT ALCOHOL AFTER LIVING 5 DAYS IN I PER CENT ALCOHOL 



A Five Days in I Per Cent Alcohol 

 Seconds 

 Exp. I cilia stop 255 



2 cilia Stop 395 



3 cilia Stop 520 



4 cilia stop 230 



5 cilia stop 315 



6 cilia stop 380 



7 cilia stop 410 



8 cilia stop 210 



9 cilia stop 490 



10 cilia stop 300 



C Control 



Seconds 



Exp. I cilia stop 255 



2 cilia stop 240 



3 cilia stop 360 



4 cilia stop 380 



,5 cilia stop 1 50 



6 cilia stop 330 



7 cilia stop 205 



8 cilia stop 405 



9 cilia stop 260 



10 cilia stop 330 



Average resistance = 35° -5 



Average resistance = 291.5 



