MECHANISM OF DEATH 



275 



records two such experiments, the one with seeds being 

 performed by Groves (1917), the other, with fruit flies 

 (Drosophila), by Loeb and Northrop (1917). 



If we plot the curves of the survivors, we obtain the 

 inverted S-shape, the typical curve for chance distribu- 

 tion. If we plot the organisms dying per unit time as 



Table 76. — Order of Death by Heat 



