38 LABORATORY BACTERIOLOGY 



Nacreous : translucent, grayish white, with pearly luster. 



Sebaceous : translucent, yellowish or grayish white. 



Butyrous : translucent and yellow. 



Ceraceous : translucent and wax colored. 



Opaque. 



Cretaceous : opaque and white, chalky ; dull, without luster. 



Dull : without luster. 



Glistening : shining. 



Fluorescent. 



Iridescent. 



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FlG. 6. Character of borders of colonies: I, entire; 2, undulate; 

 3, repand ; 4, lobate-lobulate ; 5, auriculate ; 6, lacerate ; 7, fim- 

 briate ; 8, ciliate ; 9, erose. 



