The extensive observations on the relation of pulmonary tuberculosis to the absorption of infective material from the intestine, which followed Koch's remarks on the relation between the human and bovine forms of the disease, have led to some modification of our ideas regarding methods of infection in phthisis. As is customary when attention is directed to one aspect of a question, some observers have advanced extreme views and, as usual, there is danger that these views will not be critically examined, but will be too widely accepted. That healthy skepticism which is so valuable an asset in the mental make-up of the scientific observer is often sadly lacking in the average physician.
About a year ago two pupils of Calmette, Vansteenberghe and Grysez1 published an article, which has since been widely quoted, and which recorded experiments tending to show that foreign particles taken into the intestinal canal, or injected
THE INTESTINAL ORIGIN OF PULMONARY TUBERCULOSIS.. JAMA. 1906;XLVII(21):1742. doi:10.1001/jama.1906.02520210050004