108 BACTERIOLOGICAL ANALYSIS LESSON vi 



(7) Dry them between folds of blotting-paper and again 

 pass three times through the flame. 



(8) Stain in carbol fuchsine, decolourise in hydrochloric 

 acid and 70 per cent alcohol, and counterstain with 

 methylene-blue, as described on p. 60. 



Mount and examine with -fa in. oil immersion for 

 tubercle bacilli. 



