. The bacteriology of the eye. om the microscopical findings whether we have a mixed infection of Streptococci and Pneumo- cocci or not. It should be noted in this connexion that such a mixed in-fection in the eye is very rare. I have only seen it here and there in pus from a lacrymal sac (and then long chains were present such as the Pneumococcus never forms in secretions). On the other hand, in the hundreds of cases of pneumococcal infection of the cornea iulcus serpens), which in the course of years we have proved by cultures, we 1 The case published by Haglnnd as one of Meninr/ococcis was
. The bacteriology of the eye. om the microscopical findings whether we have a mixed infection of Streptococci and Pneumo- cocci or not. It should be noted in this connexion that such a mixed in-fection in the eye is very rare. I have only seen it here and there in pus from a lacrymal sac (and then long chains were present such as the Pneumococcus never forms in secretions). On the other hand, in the hundreds of cases of pneumococcal infection of the cornea iulcus serpens), which in the course of years we have proved by cultures, we 1 The case published by Haglnnd as one of Meninr/ococcis was a pure diplococcal the secretion were only Diplococci, some infra-cellular ; in the cultures at first Diplococci,then long chains. All these forms stained very intensely with Gram. This is not a trueMeningococcus. The Frankel Meningococcus also forms chains. Fig. 44, from a Frankelspreparation, shows only Diplococci in the secretion ; they stain partly by Gram, and thusare different from the Weichselbauni Fig. 43. -Streptococcal Pus (OrbitalCellulitis). 208 BACTERIOLOGY OF THE EYE have never found the Streptococcus growing at the same time. The same is trueof the numerous cases of pneumococcal conjunctivitis. Such findings as I havefigured are rightly to be considered as pure infections with Pneumococcus; or, atleast, we must attribute to the Pneumococcus the causation of the diseased Pneumococci do form chains in the secretion, they are quite short, straightlittle ones, consisting of two or three members, which are to some extent elongatedand vary in thickness ; while the streptococcal chains are formed of rounded orflattened cocci, of which the adjoining pairs often lie closer, and fuse into a Diplo-coccus. The diagnosis of Pneumococcus in secretion can only be difficult as againstthe Streptococcus mucosas. In preparations of the secretion of our case (Eupprecht)elongated Diplococci were also found, although in the culture only Streptococcu
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