678 



Tuberculosis 



but with it some of the bacilli, which, being transported to new tissue 

 areas, could occasion a widespread metastatic invasion of the disease. 

 Old tuberculous lesions which had been encapsulated were sometimes 

 softened and broken down, and became renewed sources of infection 

 to the individual, so that, a short time after an enthusiastic recep- 

 tion, tuberculin was placed upon its proper footing as an agent 

 valuable for diagnosis in veterinary practice, but dangerous in human 

 medicine, except in cases of lupus and other external forms of tuber- 



Fig. 279. — Massive culture of the tubercle bacillus upon the surface of glycerin- 

 bouillon, used in the manufacture of tuberculin. 



culosis where the destroyed tissue could be readily discharged from 

 the surface of the body. 



Many, however, continued to use it, and Petruschky* has reported, 

 with careful details, 22 cases of tuberculosis which he claims have 

 been cured by it. 



* "Berliner klin. Wochenschrift," 1899, Dec. 18-25. 



