22 



ILLINOIS BIOLOGICAL MONOGRAPHS 



[142 



Minutes 

 1200 



1080 

 960 

 840 

 720 

 600 

 480 

 360 

 240 

 120 



100 



t 



10 



0.05. 0.1. 0.15. 0.2. 0.25. 0.3. 0.35. 0.4. 0.45. 0.5N. 



Figure 10. Barium chloride 



TABLE XII 



Barium Chloride. Temper.\ture 20.5°C. November 22, 1916 



