542 



WALDO SHUMWAY 



TABLE 11 



Race B. Experiments with iodine. Average daily division rates re-averaged by five 



day periods 



Experiments with iodine and potassium iodide. Protocol 

 Primary solution iodine, 1, potassium iodide, 2, water 300 



Solution iodine 1-2000 

 1-20,000 

 1-200,000 

 1-2,000,000 



Death immediately 



Death in two or three minutes 



Death in 48 hours 



Death in 72 hours 



1-20,000,000 Decrease in division rate 



Average daily division rates re-averaged by five day periods 



each in a medium of 2 drops of hay infusion plus 2 drops of the 

 desired gland suspension (prepared by shaking up 2 mgm. of 

 the desiccated gland substance in 2 cc. of boiled tap water). 

 The glands used were thyroid, suprarenal, thymus, and pituitary. 



TABLE 12 

 Race B. Experiment 1. Daily division rate averaged by five day periods 



