METHODS OF PURE CULTURE STUDY 127 



Glossary of Terms used on the Chart 



Adherent, Applied to sporangium wall, indicates that remnants of sporangium 

 remain attached to endospore 'or some time. 



Aerob'c, growing in the presence o free oxygen; strictly aerobic, growing o)ily 

 in the presence of free oxygen. 



Amorphous, without visible differentiation in structure. 



Anaerobic, growing in the absence of free oxygen; str.'ctly anaerobic, growing 

 only in the presence of free oxygen; facultative anaerobic, growing both 

 in presence and in absence of free oxygen. 



Arborescent, branched, tree-like growth. 



Beaded, in stab or stroke culture, disjointed or semi-confluent colonies along the 

 line of inoculation. 



Bipolar, at both poles or ends of the bacterial cell. 



Brittle, growth dry, friable under the platinum needle. 



Butyrous, growth of Ijutter-like consistency. 



Chains, four or more bacterial cells attached end to end. 



Chromogenesis, the production of color. 



Ciliate, having fine, hair-like extensions, resembling cilia, sometimes not visible 

 to the naked eye. 



Clavate, club-shaped. 



Coagulation, the separation of casein from whey in milk. 



Contoured, an irregular, smoothly undulating surface, like that of a relief map. 



Convex, surface the segment of a sphere. 



Crateriform, a saucer-shaped liquefaction of the medium. 



Cuneate, wedge-shaped. 



Curled, composed of parallel chains in wavy strands, as in anthrax colonies. 



Diastatic action, conversion of starch into simpler carbohydrates, such as dex- 

 trins or sugars, by means of diastase. 



Echinulate, a growth along line of inoculation with toothed or pointed margins. 



Effuse, growth thin, veily, unusually spreading. 



Endospores, thick-walled spores formed within the bacterial cell; i.e., typical 

 bacterial spores like those of B. anthracis or B. subtilis. 



Entire, with an even margin. 



Erose, border irregularly toothed. 



Filaments, applied to morphology of bacteria, refers to thread-like forms, gen- 

 erally unsegmented; if segmented, to be distinguished from chains (q. v.) 

 by the absence of constrictions between the segments. 



Filamentous, growth composed of long, irregularly placed or interwoven threads. 



Filiform, in stroke or stab cultures, a uniform growth along line of inoculation. 



Flocculent, containing small adherent masses of bacteria of various shapes float- 

 ing in the culture fluid. 



Fluorescent, having one colorby transmitted light and another by reflected light. 



Granular, composed of small granules. 



Infundibuliform, form of a funnel or inverted cone. 



Iridescent, exhibiting changing rainbow colors in reflected light. 



Lobate, having the margin deeply undulate, producing lobes (see undulate). 



Luminous, glowing in the dark, phosphorescent. 



