PETERS. — METABOLISM AND DIVISION IN PROTOZOA. 



471 



destructive maximum of concentration. The following experiments were 

 made to determine the same point for calcic chloride: 



Series 5. Expt. No. 57, Apr. 17, 1902. 



(All Stentors originated from culture No. 20318.) 



0.05000 m. CaCL. 



Time hr. 22 hr. 



No. of Stentors 100 



No. of Divisions 



Mortality 100 



Mean Result 



0.04000 m. CaCL. 



Time hr. 22 hr. 



No. of Stentors 100 



No. of Divisions 



Mortality 100 



Mean Result 



Time . . . 

 No. of Stentors 

 No. of Divisions 

 Mortality . 

 Mean Result 



0.03000 m. CaCL 



Ohr. 

 100 



22 hr. 











100 







Time . . . 

 No. of Stentors 

 No. of Divisions 

 Mortality . 

 Mean Result . 



0.02000 m. CaCL. 



. . . hr. 22 hr. 49 hr. 



... 100 16 11 



, . . . 



... 84 89 



. . . . 0.1G 0.11 



Time 



No. of Stentors 

 No. of Divisions 

 Mortality . 



Mean Result 



.01000 m. CaCl,. 



Ohr. 

 100 



22 hr. 

 51 





 49 



0.51 



49 hr. 

 49 





 51 



0.49 



