25 



30 



SS'C. 



5 10 15 20 



Fig. 2. Plots of the logarithms of K, the rate of phagocytosis (ordiiiates), 

 against temperature (abscissae). Data taken from Table 1 of Aladsen and Wata- 

 biki. Lower curve from their own calculation of K by the formula of a monomo- 

 lecular reaction. Upper curve shows the calculation of K by the improved method 

 described in the text after correcting for viscosity of the medium. Slope of the 

 graph (dotted line) represents the temperature coefficient of the process, Qio, 

 which is practically constant over this range of temperature. Calling the dotted 

 line 100 per cent, the probable percentage deviation of the points from this line 

 is only one-half as great by the new analysis. Before correcting for viscosity the 

 new analysis gives higher values of Qm than the original. Constants have been 

 added to the values of Log A' in both experiments for convenience in plotting. 



LogK 

 2 1 



Q,,= 2.0*0.1 



Improved 



Original 



30 



ZVC 



5 10 15 20 25 



Fig. 3. Same as Fig. 1, but the data taken from another similar experiment ci 

 Madsen and Watabiki-. 



334 



