APPENDIX. 



GLOSSARY OF TERMS.* 



AGAR HANGING BLOCK, a small block of nutrient agar cut from a 



poured plate, and placed on a cover-glass, the surface next the 



glass having been first touched with a loop from a young fluid 



culture or with a dilution from the same. It is examined upside 



down, the same as a hanging drop. 

 AMEBOID, assuming various shapes like an ameba. 

 AMORPHOUS, without visible differentiation in structure. 

 ARBORESCENT, a branched, tree-like growth. 

 BEADED, in stab or stroke, disjointed or semi-confluent colonies along 



the line of inoculation. 

 BRIEF, a few days, a week. 



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. 

 CRATERIFORM, round, depressed, due to the liquefaction of the 



medium. 

 CRETACEOUS, growth opaque and white, chalky. 



* Chart of Society of American Bacteriologists. Jaii., 1908. 

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