EXPERIMENT STATION BULLETINS. 



441 



A 7 days old culture of Lactone, not curded was used in the experi- 

 ment tabulated below, 0.1 cc. being used as an inoculum. 



In Table XXV, 1 cc. of a 9 day old culture of Stock lactic was used, 

 culture not curded. 



TABLE XXV. 



One-tenth of a cubic centimeter of a 16 day old culture of Stock lactic 

 was used in the following experiment. 



TABLE XXVL 



Although an amount of data has been omitted from the four pre- 

 ceding tables, the general results are directly comparable with those of 

 former experiments. In no case was the rejuvenating influence marked, 

 especially in that of the Stock lactic. This organism is presumably so 

 weak that a much longer association with the yeast LZ is necessary for 

 a restoration of its vitality than in the case of Lactone. 



