Convention of Phthisiologists.
—The annual convention of the Italian Society of Phthisiology was held in Turin under the presidency of Professor Costantini, who discussed the lymphatic system in the pathogenesis of pulmonary tuberculosis. The allergic phenomena in patients with tuberculosis are believed to originate in the lymphatic system, and the lymph is believed to have an inhibiting action on the development of the tubercle bacillus. The lymph in the lung of tuberculous persons may move in a direction opposite to the one it follows in healthy persons. The traditional concept that the tubercle bacillus enters the lung through inhalation has been discredited by recent experiments that indicate that the lymphatic oropharyngeal structures of Waldeyer's ring often serve as the first place of implantation of the bacillus that is carried from there to the hilar lymph nodes. This is in marked contrast to the concepts of Küss-Ghon and the so-called Parrot's