GENERAL BACTERIOLOGY 



107 



EXERCISE 61. VARIETY OF PIGMENTS. 



Make agar or potato streak cultures of the following organisms, incubate 

 at 28 C., study, describe and sketch. 



3 TO 6 DAYS 



SKETCHES 



Bacillus 

 indicus 

 or 



Sarcina 

 aurantiaca 

 or 



Sarcina 

 lutea 

 or 



Pseudomonas 

 fluorescens 

 (B. fluorescens) 



Pseudomonas 

 aeruginosa 

 (B. pyocyaneus) 



Pseudomonas 



violacea 



or 



