26 



VELOCITY OF REACTIONS 



The quantity was measured simply by measuring 

 the intensity of colour or by weighing the coagulate. 

 The curves are very nearly straight lines, as is seen 

 from the diagram, Fig. 4. The coagulation depends 

 upon a decomposition of the protein. As water 



20 40 



60 80 100 120 

 Time in minutes — 3 



Fig. 3. 



140 160 180 



seems necessary for it, it is probably connected 

 with hydration. 



The experiment succeeded at once with haemo- 

 globin at 70-4° C. The constant was K = oi45. 

 But with the egg-albumen the investigation gave 

 at first very irregular results. The rate of decom- 

 position diminished very rapidly as the coagula- 



