Plate X 

 TOl': J'eiiiriUnuii /.s/a/irf/cu//; SoiJp, NHRL 2115, on Czapek's solution agar, 10 davs. CES'TER- I'eni- 

 nlliuni puipurogenuni Stoll, NRRL 1061, on Czapek's solution agar, 12 days BOTTOM: I'enicilliuiii herquei 

 Bainier and Sartory, NRRL 1040, on Czapek's solution agar, 10 davs. (Color jjliotographs bv Haines, 

 Northern Regional Research Laboratory. Reproduced through co-operation of Chas. Pfizer & Co., "inc.) 



