4 o 



LECTURES ON IMMUNITY 



The agreement between the observed and calculated 

 values is very satisfactory, so that there is no doubt that 

 the law represented by the differential equation deduced 

 above is really fulfilled. 



The influence of temperature on the spontaneous de- 

 struction of vibriolysin is very great, as is shown by the 

 following table, taken from a still unpublished work of 

 Madsen and Famulener : 



RATE (A*) OF DESTRUCTION OF VIBRIOLYSIN AT DIFFERENT TEMPERATURES 



The calculated values are found with help of the formula 



which has been found to agree with the experiments in 

 reaction velocity in other branches of physical chemistry. 

 ft is 128,000, or about five times as great as for the inversion 

 of cane sugar (2 5, 600). The velocity of reaction increases 

 in the proportion of 10 to i in an interval of 3.8 de- 

 grees. 



In a similar manner behaves tetanolysin, as is seen from 

 the following table, borrowed from an investigation of 

 Madsen and Famulener: 



