Rates of Growth of Individuals 



39 



centrations which were nearly lethal; then there was 

 often swelling of the body which was probably inde- 

 pendent of growth processes. The effects of pure sod- 



230 







008 0.25 0.5 1.5 5 



Time after fission in hours 



24 



Figure 18. The influence of various concentrations of sodium chloride 

 made up in hay infusion, upon growth in length in individuals of a clone 

 of Paramecium caudatum. Time is plotted on a logarithmic scale. Each 

 point represents the average of measurements upon at least 9 fixed indi- 

 viduals. Additional data for M/30 and M/50 solutions were at all points 

 very near the points which represent the controls in hay-infusion. (Data 

 of Estabrook, '10). 



