1923] 



CAMP — CITRIC ACID AS A SOURCE OF CARBON 



255 



tinia, the mats for this fungus being left for a long period due to 

 slow growth in the citrate solution. The increasing amounts 



TABLE X 



GROWTH OF FUNGI IN MGMS. ON VARYING PERCENTAGES OF CITRATE 



Acidifying 

 agent 



HC1 



Cit. Ac. 

 2J^% cit. 

 5% cit. 



HC1 



Cit. Ac. 

 2V*% cit 

 5% cit. 



HC1 

 Cit. Ac. 

 2)4% cit. 

 5% cit. 



20° C. 



Ph3.0 



Ph4.5 



30° C. 



P R 3.0 



P 



H 



Mat 



P 



H 



Mat 



P 



Mat 



Culture 2-12 days 



Culture 3-12 days 



Culture 9-12 days 



.Pa 4.5 



P 



Mat 



7.6 



189 



7.0 



168 



3.8 



25 



6.0 



6.9 



218 



7.3 



203 



3.4 



— . 



4.5 



6.8 



330 



6.9 



332 



3.3 



135 



4.6 



6.7 



444 



7.0 



447 



3.4 



45 



6.6 



156 



185 

 353 



7.3 



225 



7.2 



231 



3.9 







6.9 



? 



257 



7.5 



223 



3.7 



47 



4.5 



? 



393 



8.1 



365 



3.0 







4.7 



5.7 



544 



7.9 1 



475 



3.1 



59 



4.7 



178 



78 

 162 



6.4 



220 



- 



4.6 



211 



6.2 



178 



6.4 



5.7 



359 



5.7 



224 



6.5 



235 



6.4 



6.2 



429 



5.9 



414 



6.1 



345 



6.4 



4.6 



649 



6.6 



511 



6.1 



487 



6.4 



171 

 210 

 303 

 404 



UC1 



Cit. Ac. 

 2V 2 % cit. 



h% cit. 



Culture 4-12 days 



HC1 



4.0 



210 



■ 



7.2 



305 



7.5 



256 



7.6 



246 



Cit. Ac. 



3.6 



221 



7.2 



305 



7.5 



280 



7.9 



228 



2V 2 % cit. 



3.3 



92 



5.0 



316 



4.6 



303 



7.4 



328 



5% cit. 



3.2 



— 



4.7 



329 



3.0 





7.4 



396 



Culture 7-18 days 



HCl 



3.0 



Cit. Ac. 



3.4 



2V 2 % cit. 



3.2 



5% cit. 



3.0 



8.1 



168 



3.0 





7.4 



127 



7.0 



215 



3.0 





8.1 



170 



4.4 



134 



3.0 



immm 



6.4 



334 



4.5 



102 



4 



3.0 







4.4 



397 



Culture 11-43 days 



6.6 



90 



6.0 



99 



4.4 



157 



4.6 



6.6 



176 



6.3 



104 



5.0 



183 



5.2 



6.3 



212 



6.6 



193 



4.5 



171 



5.1 



3.1 



300 



4.4 



146 



3.2 



1 



4.8 



33 



51 



128 



288 



of citrate radical in the solutions represent more than an i 

 amount of carbohydrate material and increasing osmotic 



