16 



ILUNOIS BIOLOGICAL MONOGRAPHS 



[136 



TABLE Vn 



Sodium Nitrate. Temperature 21° C. December 9, 1916 



Minutes 

 1080 



960 



840 



720 



600 



480 



360 



240 



120 



100 



t 

 9 



0.05. 0.1. 0.15. 0.2. 0.25. 0.3. 0.35. 0.4. 0.45. 0.5. 0.55. 0.6N. 



Figure 5. Sodium nitrate 



solution. See the portion B to Q (Fig. 1). 5. At the highest concentrations 

 tested the velocity of fatality curve a second time approaches a straight line 

 but with a less rapid increase of velocity of fatality in proportion to the con- 

 centration of the solution than the portion of the velocity of fatality curve repre- 

 sented by the portion A to B, curve CABG (Fig. 1). (The portion Q to G, 



