262 



APPLIED IMMUNOLOGY 



in the chronic recurrent form of the diseases it is the 

 most valuable therapeutic agent at our disposal. Here 

 again opsonic indices utilized to guard against over- 

 inoculation, and to govern remote inoculations, will 

 suffice to prevent recurrences (Figs. 40 and 41) . 



Abscesses. — These may be primary or complicate 

 other diseases, as typhoid fever. The bacteria isolated 

 include 31. aureus, alhus and citreus. Streptococcus 

 pyogenes, Pneumococcus lanceolatus, B. coli, B. ty- 



Fig. 41. — Fred. G. Carbuncle of neck. Observe in this case the utilization of the 

 opsonic index to determine the maintenance of immunity in the "positive phase," 

 after the suspension of inoculations. 



phosus, B, pyocyaneus, B, tuberculosis, B, antkracis, 

 B, mallei and Streptothrioo actinomyces. An autoge- 

 nous bacterin is always preferable to a stock prepara- 

 tion and the therapy when so conducted usually re- 

 sults brilliantly (Figs. 42 and 43). Little should be 

 expected from bacterial inoculations with secondary 

 invaders, as B. pyocyaneus, B, lactis aerogenes, etc., or 

 with B. anthracis, B. mallei and Streptothrix actino- 

 mycosis. 



