GLOSSARY OF TERMS 



141 



fimbriate, border fringed with 

 slender processes, larger than 

 filaments. 



floccose, growth composed of short 

 curved chains, variously ori- 

 ented. 



flocculent, said of fluids which 

 contain pseudozooglojae, i.e. 

 small adherent masses of bac- 

 teria of various shapes and 

 floating in the culture fluid. 



fluorescent, having one color by 

 transmitted light and another 

 by reflected light. 



grumose, clotted. 



infundibuliform, form of a funnel 

 or inverted cone. 



iridescent, like mother-of-pearl. 

 The effect of very thin films. 



lacerate, having the margin cut 

 into irregular segments as if 

 torn. 



lobate, border deeply undulate, 

 producing lobes (see undu- 

 late). 



maximum temperature, tempera- 

 ture above which growth does 

 not take place. 



membranous, growth thin, co- 

 herent, like a membrane. 



minimum temperature, tempera- 

 ture below which growth does 

 not take place. 



mycelioid, colonies having the 

 radiately filamentous appear- 

 ance of mold colonies. 



napiform, liquefaction with the 

 form of a turnip. 



nitrogen requirements, the neces- 

 sary nitrogenous food. This 

 is determined by adding to 



nitrogen-free media the nitrogen 

 compound to be tested. 



opalescent, resembling the color 

 of an opal. 



optimum temperature, tempera- 

 ture at which growth is most 

 rapid. 



pellicle, bacterial growth either 

 forming a continuous or an 

 interrupted sheet over a fluid. 



peptonized, said of curds dissolved 

 by trypsin. 



persistent, lasting many weeks or 

 months. 



plumose, a fleecy or feathery 

 growth. 



pseudozoogloeae, clumps of bac- 

 teria, not dissolving readily in 

 water, arising from imperfect 

 separation or more or less 

 fusion of the components, but 

 not having the degree of com- 

 pactness and gelatinization 

 seen in zoogloeae. 



pulvinate, in the form of a cushion , 

 decidedly convex. 



punctiform, very minute colo- 

 nies, at the limit of natural 

 vision. 



raised, growth thick, with abrupt 

 or terraced edges. 



rhizoid, growth of an irregular 

 branched" or root-like char- 

 acter, as in B. inycoides. 



ring (same as rim), growth at the 

 upper margin of a liquid cul- 

 ture, adhering more or less 

 closely to the glass. 



rapid, developing in from twenty- 

 four to forty -eight hours. 



repand, wrinkled. 



