146 



NEUTRON EFFECTS ON ANIMALS 



with a lower pH at this time. After 2 hours the total acidity in the stom- 

 achs of the irradiated animals was very much less than that in the control 

 rats until at the end of 5 hours the values were approximately equal. This 



U 

 U 



12 3 4 5 



HOURS 



Fig. 3. The effect of 56.4 n on the fluid content of the stomachs of rats. 

 Water withheld. Water ad Z/6. # Irradiated. O Control. 



I 



Q. 



12 3 4 5 



HOURS 



B 



Fig. ix AND B. The effect of 56.4 n on the pH and on the total acidity of the gastric 

 juice of rats. # Irradiated. O Control. 



is consistent with a higher pH of the gastric fluid in the irradiated animals 

 at this period. 



Peptic Aciiviiy of the Gastric Juice. The peptic activity of the gastric 

 juice of the irradiated rats, determined by the method of Mett (2), was 

 approximately the same as that of the controls during the first H hours 



