470 BACTERIOLOGY. 



his forearm, rubbing it well into the skin. At the end 

 of four days a large carbuncle, surrounded by isolated 

 furuncles, developed at the point where the culture had 

 been applied. This ran the usual course, and it was 

 several weeks in healing. No less than seventeen scars 

 remained to testify to the success of the experiment. 

 Bockhart rubbed upon the uninjured skin of the fore- 

 arm a small quantity of an agar culture suspended in 

 salt solution. By gently scratching with a disinfected 

 finger-nail the epithelium was removed in places over 

 the area to which the micrococcus had been applied. 

 Numerous impetigo pustules, and occasionally a gen- 

 uine furuncle, developed as the result of the procedure. 

 Bockhart examined portions of the skin, which he ex- 

 cised for the purpose, under the microscope, and came 

 to the conclusion that the cocci penetrate by way of the 

 hair-follicles, the sebaceous and sudoriparous glands, or, 

 where the epidermis had been removed by scratching, 

 directly to the deeper Jayers of the skin. 



Staphylococcus Pyogenes Albus. 



Isolated by Rosenbach (1884) from the pus of acute 

 abscesses, in which it is sometimes the only micro- 

 organism present, and sometimes associated with the 

 staphylococcus aureus and other pyogenic cocci. 



It is morphologically identical with the staphylococcus 

 pyogenes aureus, and is probably the same organism, 

 which has lost the property of producing pigment. 

 On the average it is somewhat less pathogenic. The 

 surface cultures upon nutrient agar and potato have a 

 milk-white color. Its biological characters are not to 

 be distinguished from the staphylococcus aureus. 



