METHODS OF DIAGNOSIS 305 



however, to make microscopic sections through a portion of the 

 excised tissue, when the structure of the nodule and the arrange- 

 ment of the bacilli can be readily studied. The points of differ- 

 ence between leprosy and tubercle have already been stated, and 

 in most cases there is really no difficulty in distinguishing the 

 two conditions. 



20 



