208 BACTERIOLOGY. 



as developmental forms of different genera and 

 species of moulds. It was demonstrated some 

 time ago by Lewis that flagellates or cilia- 

 bearing monads were sometimes found in the 

 blood of rats and, according to Gaule, Rattig 

 and others, members of this group are found 

 also in the blood of frogs. There undoubtedly 

 exist, therefore, microbes belonging to the ani- 

 mal kingdom which are capable of inducing 

 fatal septicaemia. Von Wittich and Koch 

 found septicaemic monads of a like kind in the 

 blood of German marmots. 



Loesch as far back as 1871, and subsequently 

 Koch, Kartulis and others demonstrated the 

 presence of amoebae in the human intestine in 

 oases of dysentery and also in the liver-abscesses 

 not infrequently accompanying -this disease. 

 These amoebae belong perhaps to the group of 

 protozoa. The successful communication of 

 the disease to cats and dogs by inoculation with 

 the amoebae makes it seem probable that the 

 amoebae are the cause of the disease. In the in- 

 testinal ulcers there are always found bacteria 

 as well, rod-forms especially, probably the results 

 of secondary infection ; in the liver-abscesses, 

 streptococci and staphylococci are at times to be 

 observed along with the amoebae. Organisms 

 of a similar kind, which, to be sure, were placed 

 by Woronin among the Myxomycetes or slime- 



