180 IMPORTANT VARIETIES OF 7Y,S>'/a<Y-/7'AV//. 



Macroscopically they appear as if sprinkled with grayish- 

 yellow pollen, with a fruit-like odor. 1 Magnified sixty 

 times : Round, sharply outlined colonies without special 

 characteristics. In the gelatin stab culture liquefaction 

 takes place slowly, with a cup-shaped depression. The 

 growth along the stab is white and thread-like. Upon 

 potato a hoarfrost-like yellowish deposit with a fruit-like 

 odor. Upon agar the growth is scarcely perceptible. 

 Kitt has expressed the belief that the organism is only a 

 special form of the Micr. pyogenes which requires further 

 investigation. 



It is pathogenic for guinea-pigs, sheep, goats, cows, 

 swine, and especially for horses. It is found in thick, 

 cord-like or nodular connective-tissue growth, usually soft- 

 ened in the center, in the perimysium, subcutis, spermatic 

 cord (after castration) and the retroperitoneal connective 

 tissue of horses. Besides, it is found in the lungs, udder, 

 lymph-glands, ear muscles, nasal mucous membrane and 

 bones. Recently ca^es have been described also where 

 botryomycosis occurred in man (compare Schneidemiihl, 



I.C.). 



Micrococcus pyogenes (Rosenbach)(Lehm.and Neum.). 



(Plates 8 and 9, i-m.) 



a Aureus (Rosenbach) Lehm and Neum. 



/? Citreus (Passet) " " " 



r Albus (Rosenbach) " " " 



Synonyms. Staphylococcus pyogenes aureus Rosen- 

 bach, Staph. pyogenes albus Ros. , Staph. pyogenes citreus 

 Passet. 2 



Ordinary Names. Grape coccus, pus coccus, simply 

 * ' staphylococcus. ' ' 



Principal Literature. Eosenbach, " Mikroorganismen bei den 

 Wnndinfektionskrankheiten des Menschen," lS-^4; Passet, "Aetio- 

 logie der eitrigen Phlegmone, " 1885 ; Garre, " Fortsch. d. Medic.," 



1 Our Micr. luteus also possesses a sometimes agreeable sometimes 

 disagreeable sweetish odor. 



2 Compare also p. 187, regarding the Staphylococcus citrens Passet. 



