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February 8, 1902


JAMA. 1902;XXXVIII(6):366-371. doi:10.1001/jama.1902.62480060004001a

When Koch had announced the discovery of tuberculin and the world was agog with expectations for the new cure of tuberculosis, this sign was said to have been posted upon the shop of an ambitious barber in Switzerland: "Corns treated and tuberculin given here." What was the conception of that barber as to the intricate nature of the remedy and the delicate shades of disease which were suited or unsuited to its use, it would be difficult to state. The case of some physicians who, under the assumed authority of professional proficiency, deal in borrowed criticisms of everything that pertains to the subject of this paper, is a little less inexplicable. A criticism to be of weight should be based upon a reasonably complete personal knowledge.

If I can succeed in clearing away any of the clouds which befog this subject my object in presenting the following remarks upon my