PRACTICAL BACTERIOLOGY. 



If it is desirable to bring out the gonococci still more 

 distinctly, it is well to treat the preparation before- 

 hand with acetic acid. If the beauty of the prepara- 

 tion is not to be considered, but it is only wished to 

 stain the gonococci quickly, the cover-glass need only 

 be kept for two or three minutes in concentrated 

 aqueous fuchsine solution. The gonococci are very 

 intensely stained, and stand out quite clearly enough 

 from the elements of the pus, which are also, to be 

 sure, intensely coloured themselves. 



