DESCRIPTION OF PLATE III. 



Fig. I. — Diplococcus meningitidis in film, from cerebro-spinal fluid 

 obtained by lumbar puncture in a case of cerebro-spinal 

 fever. 



Fig. 2. — Gonorrhoeal pus, showing numerous polynuclear leuco- 

 cytes, one of which contains gonococci ; a part of a 

 squamous cell also shown. 



Fig. 3. — Pneumobacillus in pus from a case of conjunctivitis. 



Fig. 4. — Pneumococci in sputum from a case of pneumonia. 



Fig. 5. — Micrococcus catarrhalis in sputum from a case of 

 bronchitis. 



Fig. 6. — Staphylococci in old and degenerated pus. 



This plate is to illustrate the main morphological differences 

 between the chief pathogenic diplococci and organisms re- 

 sembling them. All the films were stained by Gram and 

 counterstained by carbol fuchsin. In Figs, i, 2, 3, and 5 the 

 organisms were coloured pink ; in 4 and 6 they were violet. 

 The figures are all drawn to the same scale. 



