Pathogenic Microbes in the Static Condition. 51 



the expectorations : tuberculosis, glanders, actinomy- 

 cosis, sheep pox; in the urine: bacterial hsemoglobinu- 

 ria of cattle, tuberculosis, etc.; in the semen and vagi- 

 nal mucus: gonorrhoea; in the secretions of wounds: 

 glanders-farcy ulcers, syphilitic chancres, lesions of 

 dourine, pustules of variola of the different species of 

 animals. 



Hemorrhages may occur through the various pas- 

 sages and thus distribute externally the germs which 

 are present in the blood : charbon. 



If germs do not appear to be eliminated by the in- 

 tact skin it is none the less true that the latter is fre- 

 quently soiled by pathogenic germs emitted by the 

 diseased ; these germs are conveyed to the skin 

 through contact of the secretions or infected litters. 



A subject affected with a contagious disease does 

 not appear to be at all stages of the disease capable 

 of communicating the contagion to the same degree. 

 Thus, in the case of glanders and tuberculosis, the 

 danger appears to be absent if the softened lesions do 

 not directly communicate with the exterior. 



Cadavers of infected subjects. — The bodies of animals 

 dead of infectious diseases are fertile sources of patho- 

 genic germs; from the stand-point of the alimentary 

 hygiene of man it is of great importance to recognize 

 the place of election of those germs, but the question 

 can hardly be considered in a general manner. 



As to the duration of the virulence of pathogenic 

 microbes in dead bodies left to themselves, it varies 

 greatly according to the germs concerned, but upon 

 this subject our knowledge is very incomplete. We 

 know, however, that in some diseases the pathogenic 

 power may persist for a long time — for years in the 



OF THF. 



