S. C. BROOKS 



193 



TABLE IV. 



The Surface Tension and Viscosity of 5 Per Cent Complement Solutions Radiated 

 for Di^ff event Lengths of Time. 



5.055 ?- 



Drops 



Fig. 2. The progressive changes in surface tension and viscosity of complement 

 during photoinactivation. The squares indicate the data for the diluent alone. 

 The ordinates represent the time, or the number of drops required for the out- 

 flow of a constant amount of complement from a Traube stalagmometer. The 

 abscissas represent in minutes the time of exposure of the samples to the light. 

 Open circles and square, surface tension; solid circles and square, viscosity. 



