$8 LABORATORY GUIDE IN BACTERIOLOGY 



SECTION 10 



DIRECTIONS FOR FILLING OUT CULTURE CHARTS 



(See chart on pp. 59-60.) 

 First page 



I. Name the group and organism. 

 II. Indicate the source and habitat from books 

 and references. 



III. Name the most important references, and 

 read them. 



IV. Morphological characters. 



1. Describe the morphology opposite the 

 medium from which obtained as observed 

 from the stained preparation. 



2. Size: approximate estimate in microns. 

 Note whether large or small, thick or 

 slender, round or square ends, etc. 



3. Arrangement of bacteria: in groups, 

 chains, bunches, pairs (diplococcus), sar- 

 cina form, filaments, branching, etc. Also 

 note different arrangements, if observed, 

 in different media. 



4. Staining powers: Mark + for positive, 

 for negative stains. Special stains 

 must be described more fully. 



5. Motility: If absent, mark ; if present, 

 -f-. In the latter case describe the char- 

 acter of the movement. 



6. Spores: Absence noted by ; presence, by 

 +. If present, mention the method of 

 spore stain applied.. 



