CHAPTER V. 



ACTINOMYCOSIS. 



Streptothrix Actinomyces (Rossi-Doria). 



In 1845, Langenbeck discovered that the specific dis- 

 ease of cattle known as actinomycosis could be com- 

 municated to man. His observations, however, were not 

 given to the world until 1878, one year after Bollinger 1 

 had discovered the cause of the disease in animals. 



Fig. 76. — Actinomyces bovis, from the tongue of a calf; x 500 (Frankel and 



Pfeiffer). 



J. Israel 2 first observed the disease in man and studied 

 its pathogenesis. The best paper on the subject is prob- 



1 Deutsche Zeitschrift fur Thiermedizin, 1 877. 



2 Virchow's Archives, 1874-1878. 

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