PLATE I. CONJUNCTIVAL SECEETIONS. 

 GUAM'S STAIN. 



FIG. I. KOCH-WEEKS BACILLI (from an acute catarrh). Very slender rods, which 

 are of varying length and are Gram-negative (stained red). A few Gram- 

 positive (blue) xerose bacilli are also present. 



FIG. II. BACILLUS INFLUENZA (L. Miiller's bacillus) (from a catarrhal conjunc- 

 tivitis). Very short Gram-negative rods, which often resemble elongated 

 Diplococci, and are shorter than the Koch- Weeks bacillus. 



In I.a they are mixed with Koch-Weeks bacilli ; in II. b they are pure. 

 II.c and Il.d are pure cultures on blood-agar (in II.c pigeon's nucleated 

 blood-corpuscles are seen). In II.c there are only the short forms ; in Il.d 

 there are the longer ones. 



FIG. III. MoRAX-AxENFELD BACILLUS (from a case of angular blepharo-con- 

 junctivitis). Large Gram-negative Diplobacilli, some arranged in short 

 chains. No definite capsules. 



FIG. IV. FRIEDLANDER'S PNEUMOBACILLUS (from a dacryocystitis case). Gram- 

 negative bacilli, either single or in pairs; sometimes in chains, the double 

 form being not nearly so regular as in the case of the Diplobacilli. The 

 capsules are also much more apparent, and in places as, for instance, in IV.6, 

 where the preparation is overstained they stain light red, and are surrounded 

 by a clear space. In the middle of IV.6 the capsules are overstained, and 

 resemble very large bacilli. (Preparation by Dr. Zur Nedden.) 



FIG. V. BACTERIUM COLI (from a case of blennorrhcea neonatorum). Gram- 

 negative bacilli of varying shape and size. Quite short, and also long, 

 bacilli are to be seen alongside of occasional double forms. 



FIG. VI. Loffler's BACILLUS DIPHTHERIA (from a case of pseudo-membranous 

 conjunctivitis). Gram-positive bacilli, which are often curved and have 

 thickened ends. 



(a) Short forms predominate. There are also some short chains, indicating 

 a mixed infection with Streptococcus pyogenes. 



(b) Long slender forms, some with polar staining ; also a few Diplo- 

 bacilli. 



