ROUTINE TESTS FOR THE IDENTIFICATION OF BACTERIA 145 



Name of organism. 

 Source 



Studied by.. 

 Habitat _.. 



. Culture No. 

 Date 



Descriptions (Underscore regun 



STAINING CHARACTERISTICS 



Gram: Age: Method: 



Special stains: 



AGAR STROKE Age: 



Amount of growth: scanty, moderate, abundant. 



Torm: filiform, echinulate, beaded, spreading, rhizoid. 



Consistency: butyrous, viscid, membranous, brittle. 



Chromogenesis: ijluoresceni, iridescent, photogenic 



AGAR COLONIES 



Age: 



Form: punctiform, circular, filamentous, rhiloid, irregular. 

 Elevation: effuse, fiat, raised, convex. 

 Surface: smooth, contoured, radiate, concentric, rugose. 

 Margin: entire, undulate, erase, filamentous, curled. 

 Density: opaque, translucent. 



NUTRIENT BROTH 

 Surface growth: none. 

 Subsurface growth: n 

 Amount of growth: si 

 Sediment: t 



Age 

 . fing, pellicle, JloccuUnt, mernbrano 

 one, turbid, granular. 

 canty, moderate, abundant. 

 ular. fioccuUnt, viscia. flaky. 



OTHER MEDIA 



Fig. 3. Descriptive Chart for instruction. Back of chart is shown on page 146. 

 Size of actual chart is S}i by 11 in. Distributed by the Society of American Bacteri- 

 ologists. 



