140 



BACTERIOLOGY OF THE EYE 



carbol thionin, or warm Loffler's methylene blue, but as a general rule 

 do not take up any stain very intensely. With safranin, which is often 



used as a counter - stain, 

 they only stain feebly. 



In a smear preparation as 

 a rule only Koch - Weeks 

 bacilli are seen, or at most 

 a few cocci or other bacilli 

 (especially xerosis) also. Of 

 course, it is presumed that 

 material is not taken dur- 

 ing the subsidence of the 

 disease, when the sapro- 

 phytes again become 

 prominent. 



The apparent contradic- 

 tion between the absence of 

 B. xerosis in the smear and 

 its almost invariable pre- 

 sence in the cultures, not in- 

 frequently with some Stapliylococci also, is due to the fact that, although 

 in small numbers, it grows much more rapidly, and so becomes pro- 

 minent in the cultures. 



FIG. 11. SECRETION PREPARATION 

 (FREIBURG), x 1,000. 



FIG. 12. SECRETION, PARIS EPIDEMIC 



(MORAX). X 1,000. 

 Some of the bacilli are represented rather too thick 



FIG. 13. SECRETION, CZERNOWITZ 

 EPIDEMIC (KAMEN). x 1,000. 



