CLASSIFICATION 41 



BRITTLE, growth dry, friable under the platinum needle. 

 BULLATE, growth rising in convex prominences, like a blistered 



surface. 



BUTYROUS, growth of a butter-like consistency. 

 CHAINS, 



Short chains, composed of 2 to 8 elements. 



Long chains, composed of more than 8 elements. 

 CILIATE, having fine, hair-like extensions like cilia. 

 CLOUDY, said of fluid cultures which do not contain pseudozoogloeae. 

 COAGULATION, the separation of casein from whey in milk. This 



may take place quickly or slowly, and as the result either of 



the formation of an acid or of a lab ferment. 

 CONTOURED, an irregular, smoothly undulating surface, like that 



of a relief map. 



CONVEX, surface the segment of a circle, but flattened. 

 COPROPHYL, dung bacteria. 

 CORIACEOUS, growth tough, leathery, not yielding to the platinum 



needle. 

 C!RATERIFORM, round, depressed, due to the liquefaction of the 



medium. 



CRETACEOUS, growth opaque and white, chalky. 

 CURLED, composed of parallel chains in wavy strands, as in anthrax 



colonies. 

 DIASTASIC ACTION, same as DIASTATIC, conversion of starch 



into water-soluble substances by diastase. 

 ECHINULATE, in agar stroke a growth along line of inoculation, 



with toothed or pointed margins; in stab cultures growth 



beset with pointed outgrowths. 

 EFFUSE, growth thin, veily, unusually spreading. 

 ENTIRE, smooth, having a margin destitute of teeth or notches. * 

 EROSE, border irregularly toothed. 

 FILAMENTOUS, growth composed of long, irregularly placed or 



interwoven filaments. 

 FILIFORM, in stroke or stab cultures a uniform growth along line 



of inoculation. 

 FIMBRIATE, border fringed with slender processes, larger than 



filaments. 

 FLOCCOSE, growth composed of short curved chains, variously 



oriented. 

 FLOCCULENT, said of fluids which contain pseudozoogloeae, i. e., 



small adherent masses of bacteria of various shapes and float- 

 ing in the culture fluid. 

 FLUORESCENT, having one color by transmitted light and another 



by reflected light. 



