400 



[Vol. 9, 1922] 



GARDEN 



Explanation of Plate 



PLATE 28 



Fig, 1. Four-day colonies on nutrient agar testing Ph 6.6, showing colorless 

 zone surrounded by a marked white precipitate. 



Fig. 2. S.i me as fig. 1, showing a thickly sown plate with a coalescing and 

 spreading grayish sheet of colonies deeply imbedded and growing next to the 

 glass. 



Fig. 3. Ten-day slant of nutrient agar testing P H 6.4 showing colorless zone 

 surrounded by a marked white precipitate. 





