90 LOCALIZED INFECTIONS OF PUS NATURE 



dyes used. It does not form spores and does not 

 move from place to place by its own power. It grows 

 best about 85 F. It is killed about 56 C. or 130 F. 

 at ten minutes in the moist condition, but when com- 

 pletely dry it may require boiling to kill. When dried 

 on cloth or paper it may live three months. This 

 organism grows well on ordinary laboratory foodstuffs, 

 and produces, particularly in the presence of diffuse 

 light and oxygen, a golden yellow color. This coccus 

 has the property of coagulating milk and liquefying 

 gelatin by the ferments it produces. It is killed by 

 corrosive sublimate, 1 to 1000, in ten minutes in 

 watery solution. In pus a considerably longer time is 

 required. 1 to 20 carbolic kills in one minute; 1 to 

 500 in about one-half hour. The pus in which the 

 staphylococcus lives supplies a protective envelope, 

 and should be well mixed and diluted with the ger- 

 micide. 



This organism is very virulent for the smaller animals, 

 which may be infected by rubbing on, or injection 

 under, the skin. It will then produce a local abscess 

 or septicemia. It may produce acute inflammation 

 of the interior of the heart, or bone disease. 



Staphylococcus Pyogenes Albus. The Staphylococcus 

 pyogenes albus is precisely like the foregoing except 

 that it does not produce the golden-yellow pigment, 

 but grows in a porcelain-white manner. There is an 

 organism on the skin to which we give the same 

 name, but add the word "epidermidis." It is con- 

 stantly present on the surface, in the epidermis, and in 

 the glands of the skin. Since its pus-forming ability 

 is so feeble, "pyogenes" may be omitted and the 



