[Vol. 10 



270 



ANNALS OF THE MISSOURI BOTANICAL GARDEN 



solution), and the titration at the time of the last determination 

 was 26.1 cc. N/10 NaOH on the same amount of solution, indica- 

 ting that less than half of the acid had been used. The difference 



Days v> 



Fig. 5. Aspergillus sp. in solution 2. 



between the total carbon-dextrose curve for cultures 9 and 3 is 

 very marked, the rise of this curve being very rapid in the case of 

 organism 3 and very slow in the case of organism 9. 



Penicillium stolonifcrum. — In figs. 6 and 7 are found the curves 

 for the metabolism of this fungus, and the curves for the trend 



