10. Paratyphoid Bacillus. Stains like the typhoid bacillus.
11. Colon Bacillus. Gram-negative. May be stained with Löffler’s methylene-blue or carbol-fuchsin.
12. Diphtheria Bacillus. May be stained in sections of diphtheritic membranes with Löffler’s methylene-blue, watery aniline stains, or with Gram’s if the decolorization is not carried too far.
13. Bacillus of Chancroid. Gram-negative. Stain according to Unna’s method:—
1. Fix in alcohol.
2. Stain 5-10 minutes in a mixture of a solution of methylene-blue 1 grm., potassium carbonate 1 grm., alcohol 20 cc., water 100 cc., and a solution of methylene-blue 1 grm., borax 1 grm., water 100 cc.
3. Place sections on slide; blot.
4. Decolorize in Unna’s glycerin-ether mixture.
5. Dry; dehydrate in alcohol.
6. Xylol; balsam.