PLANT BACTERIA, VOL. 3. 



PLATE 1 IB. 



(i) Photographs of Petri-dish poured plates, showing behavior of Aplanobader rathayi in +15 peptonized beef agar. ,A, r plate 

 sown heavily -growth slow in developing but finally good; B, plate sown thinly growth retarded; C, plate] sown more 

 thinly growth still more retarded; D, plate sown still more thinly, but with quite a good many bacteria no growth. Plates 18 

 days old at room temperature (25 C.==). Growth visible on A after about 9 days. (2) Portion of an agar poured plate, showing 

 at B a buried colony of the white organism frequently associated with Aplanobader rathayi, in which (but nowhere else on the 

 plate) are growing the small yellow (black in photo) colonies of Ap. rathayi. which was sown copiously. Time 24 days. (3) Like 

 2, but from another sowing: B. A buried white colony containing the yellow (white in photo) colonies of Aplanobader rathayi; S,S, 

 two surface colonies of the white schizomycete in which no yellow colonies were visible. The plate was sown heavily with the 

 yellow organism, but none developed, except in the body of the buried white colonies. Time 26 days. 



