TABLE 7-a (Spring) 

 Robinia pseud-acacia 



These leaves were young, and picked in the sun on a bright day. The experi- 

 ments were begun on May 9, and readings taken until May 25 to obtain a possible 

 rise from fungus or bacterial growths. 



The leaves were brown, dry, and quite odorous when removed from the flasks, 

 but there were no visible fungus growths. 



Temperatures constant until leaves were removed, May 25, 1911. 



288 



