Staphylococci Pyogenes Aureus et Albus 257 



a diffuse cloudiness, with a small quantity of slightly yellow- 

 ish sediment. 



Milk. In milk coagulation takes place and is followed 

 by gradual digestion of the casein. 



Toxic Products. Leber seems to have first conceived of 

 suppuration as a toxic process depending upon the soluble 

 products of parasitic fungi, and in 1888, through the action 

 of alcohol upon staphylococci, prepared an acicular crystal- 

 line body soluble in alcohol and ether, but slightly soluble 

 in water, to which he gave the name phlogosin. 



Fig. 75. Staphylococcus pyogenes aureus. Puncture culture three 

 days old in gelatin (Frankel and Pfeiffer). 



Mannatti found that pus has substantially the same toxic 

 properties as sterilized cultures of the Staphylococcus; that 

 repeated injections of sterilized pus induce chronic in- 

 toxication and marasmus; that injection of sterilized pus 

 under the skin causes a grave form of poisoning; and that 

 the symptoms and pathologic lesions caused by these 

 injections correspond with those observed in men suffering 

 from chronic suppuration. 



