112 



BOTANICAL GAZETTE 



[august 



As table V shows, and as graphically displayed in fig. 4, there was 

 a very marked difference in the heat liberated by the two sets of 

 seeds up to the fifth day. At this time the temperature in the 1904 

 flask rose very rapidly. Upon opening the flasks, the cause of this 

 sudden rise was at once seen to be the active fermentation, the odor 

 of which was evident, and the contents of the flask were found to 

 be covered with P enicillium . The accuracy with which the heat 

 yield indicates the germinating power of the seeds is shown by 

 Jig. 5, in which the contents of the two flasks are photographed in 

 the Petri dishes into which they were emptied for this purpose. Not 



Fig. 4. — Red clover (experiment III): 25 grams; broken line, 1904; solid 



line, 191 1. 



more 



germination. On the other hand, practically all of the 191 1 



germinated o _ 



merely a very slight trace of mold 



isly. In 

 I do not 



germination 



amount of mold 



by the evidence, but rather that the sterilization had resulted in 



ft m tt *fe J. ._ _-. 



mold, and that some time 



elapse before these could produce any considerable amount of 



mvcelium 



