EXERCISE 76. PUS COCCUS GROUP. 

 Micrococcus pyogenes var. albus (EOSENBACH) L. & N. 



145 



SYNONYMS. Staphylococcits pyogenes albus KOSENBACH; 

 Staphylococcus epidermidis albus WELCH ; white staphylococcus. 



EXPLANATORY. First described by Rosenbach. One of the com- 

 mon organisms found in pus. Occurs on the skin, in sputum, air, 

 water, dust and soil. 



REFERENCES. Rosenbach, Mikroorganismen bei dem Wundinfec- 

 tionskrankheiten des Menschen. 1884; C. 75 ; K. & W. Ill, 105; 

 L. & N. 180 ; Mig. 2, 87 ; McF. 255 : P. 470. 



MORPHOLOGICAL CHARACTERS 



SKETCHES. 



1. FORM AND ARRANGEMENT: 



a. Bouillon 



f>. Agar 



c. Gelatin 



d. Other media 



2. SIZE: 



3. STAINING POWERS : 



a. Aqueous gentian- violet. . 



b. Loeffler's methylen-blue. 



c. Gram's stain 



d. Special stains 



4. MOTILITY : 



a. Character of movement.. 



b. Flagella stain 



5. SPORES: 



6. SPECIAL CHARACTERS : 



a. Capsules 



b. Involution forms 



c. Deposits or vacuoles 



d. Pleomorphism 



