VIL] MICROCOCCUS. 67 



in the blood-vessels and in the parts around. The same 

 holds good for the disseminated abscesses and necroses 

 occurring in connexion with surgical pyaemia. In this 

 malady masses of micrococci have been found in many of the 

 affected organs. 1 



Wassilieff 2 has shown that these micrococci only occur 

 after the death of the tissue or tissues, that in these they may 

 multiply so as to form extensive colonies, and that therefore 

 the presence of these micrococci is only a secondary 

 phenomenon. 



FIG. 19. CAPILLARY BLOOD-VESSELS OF NECROTIC MASSES FROM THE LIVER 

 OF A MOUSE. THE CAPILLARIES ARE DISTENDED BY, AND FILLED WITH 



ZOOGLCEA OF MlCROCOCCI. 



In pneumonia accompanying certain infectious maladies, 

 e.g. typhoid fever, tuberculosis, and even in severe catarrhal 

 pneumonia, large masses of micrococci may occur in the air- 

 cells. In those cases where lobules and whole lobes become 

 transformed into solid structures grey hepatisation masses 

 of micrococci may be found in the air-cells, and even growing 

 into the blood-vessels in which stasis had set in. Such is 

 the case in pleuro-pneumonia of cattle and in the pneumonia 

 of swine fever. Pasteur has cultivated micrococci which 



1 "Report of the Committee of the Pathological Society," Path. 

 Trans, vol. xxx. 



2 Centralb. f. d. med. Wiss. No. 52, 1881. 



F 2 



