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ADOLPH EICHORN. 
later. Example : June 5, 1897, an old draught horse received 
a subcutaneous injection of ^ c.c. of the culture ; June 6, large 
oedematous swelling at the place of injection ; temperature 39.7 C. 
Mucous membrane normal. On evening of June 8 symptoms 
of pleurisy; death occurred on June 9 at 2 p. m. The immedi¬ 
ate post-mortem showed the small intestines in some places 
hypersemic ; the other part of the intestines normal or slightly 
reddened ; the thoracic cavity contained 5 to 6 litres of cloudy 
fluid ; pleura highly inflamed, lungs congested, otherwise noth¬ 
ing of note. The subcutaneous injection of the culture was 
performed with all possible care. The exudate in the thoracic 
cavity contained, besides numerous examples of the injected 
bacilli, m^ny streptococci of strangles. This proves how easily 
the streptococcus of strangles grows and multiplies in a body 
weakened by kokko bacilli. This revelation also gives the key 
to the etiology. 
Infectious pneumonia is the result of the bacilli of influenza; 
the localization in the lungs is especially produced by a co¬ 
operation of the streptococci of strangles. The former prepares 
the field, and then the latter, which is spread all over, finds an 
easy opportunity to attack the subject. As soon as the strepto¬ 
coccus begins its activity the typical kokko baccilli clears the 
field. The following may confirm this : By an inoculation of 
weak kokko bacilli, together with streptococci, in the perito¬ 
neum of the guinea-pig, the latter is only found at the post¬ 
mortem. By making a culture in beef-tea of the same amount 
of Eigniere’s kokko bacilli and pyogenic or strangular strepto¬ 
cocci, it becomes after the lapse of 24 hours a rich streptococci 
culture. By incubating the kokko bacilli into a four- or five- 
day-old culture, containing pyogenic or strangular streptococci, 
which has been passed through a Chamberland filter, the beef- 
tea remains clear and the kokko bacilli do not multiply. Con¬ 
trary to this the streptococci grow and multiply very rapidly, in 
a filtered culture of kokko bacilli. Eigniere found the kokko 
bacilli in every kind of pneumonia, all of which proves that 
a single appearance of a case of pneumonia does not exclude its 
