210 APPLIED IMMUNOLOGY 



torn in the past. The patient's general health im- 

 proves immediately, rapidly and markedly, and if old 

 sinuses are present they close promptly. In our ex- 

 perience, equally good results have been obtained from 

 " T. R.," " B. E.," " O. T." and " T. P." The re- 

 sults of treatment by tuberculin in this form of tuber- 

 culosis show that 75 per cent, are markedly improved, 

 and that 40 per cent, of these will be cm^ed, while 35 

 per cent, will demonstrate only slight improvement, 

 and 10 to 25 per cent, must be counted as failures. 

 The best results will be observed in children under the 

 age of six. 



