EFFECTS ON ALCOHOLIC FERMENTATION 



211 



2 : 00 



3.20 



2.00 



.70 



.40 



.40 



Between i : 20 and i : 45 P. M., the fermentation tubes were re- 

 moved from the thermostat oven and photographed (figure 58). A 

 saccharimeter containing the sealed glass tube of radio-tellurium is 

 also shown in the photograph. The readings of this preparation are 

 not recorded in the above table. 



c. c. 



Time of day 



Fig. 59. Effects of the Rays from Radium of various Activities on the Rate of 



Alcoholic Fermentation. 



Experiment 88 



A yeast mixture was prepared by mixing thoroughly a piece of 

 compressed yeast weighing i gm. in 100 c.c. of water, and filling 

 the fermentation tubes with equal amounts of the mixture. Into one 

 of the tubes was placed the radium bromide (1,800,000 x ) in the 

 sealed glass tube, the other served as the control. 



In the following table are recorded the observations of the volumes 

 of gas evolved in each tube. 



*The temperature is indicated in figure 59. 



