JAMA. 1909;LII(5):349-350. doi:10.1001/jama.1909.25420310009001a.
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Discussing the geographical distribution of tuberculosis, Baldwin, writing in Osler's "System of Modern Medicine," says: "The tropical countries furnish no statistics as to the frequency of tuberculosis, but it is said to be less common than in temperate regions, though more rapid in its course." He gives the percentages for temperate regions estimated by most pathologists, who usually regarded only gross appearances, as varying between 30 and 60 per cent., but thinks that probably the recent estimate of Harbitz of 50 to 70 per cent. for all ages represents an approximation of the truth.

While acting pathologist of the Board of Health Laboratory I examined 287 bodies with special reference to tuberculosis and pleural adhesions. Pleural thickenings, puckered cicatrices and adhesions were not classified as tuberculous lesions; calcified, caseous and fibrocaseous lesions and miliary tubercles were considered tuberculous. The diagnoses for the greater part were based on gross appearances, but


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