FIG. 53. TUBERCLE OPSONIC INDEX. 



A smear, stained after the method given in the text. Case IX, C. M., aged twenty- 

 two years; active pulmonary tuberculosis; opsonic index, +1.6. 



FIG. 54. AN UNSATISFACTORY FILM FOR A PHAGOCYTIC COUNT. 



Note that the leukocytes are collected in masses of erythrocytes. The slide was 



greasy and the smear too thick. 



FIG. 55. A SATISFACTORY FILM FOR A PHAGOCYTIC COUNT. 



