. Journal of roentgenology . beyond a trunk of in-creased density. Then it will have the triangular shape ofthe fan, but the sticks will not be in evidence. With largelesions, it is often impossible to make out the individualtriangles. With brown induration the density is usually more dif-fuse, and the trunk of the lingual tip is abnormally promi-nent and zig-zag. Simple catarrhal conditions such as grippe and bronchitisproduce no abnormal densities unless the exudate extendsinto the air sacs. Syphilis of the lung gives no recognizable x-ray picture,except the stellate scars of old tertiary le
. Journal of roentgenology . beyond a trunk of in-creased density. Then it will have the triangular shape ofthe fan, but the sticks will not be in evidence. With largelesions, it is often impossible to make out the individualtriangles. With brown induration the density is usually more dif-fuse, and the trunk of the lingual tip is abnormally promi-nent and zig-zag. Simple catarrhal conditions such as grippe and bronchitisproduce no abnormal densities unless the exudate extendsinto the air sacs. Syphilis of the lung gives no recognizable x-ray picture,except the stellate scars of old tertiary lesions. Pleural effusion, emphysema and hydro-pneumothoraxare the same in the fluoroscopic picture and the localizationof foreign bodies in the lung is similar to such procedurefor other parts of the body. By histological examination, he proved that calcificationcauses the greatest density of all pulmonary lesions, case-ation following second, with fibrosis a close third. Cellularexudates are more dense than serous. C. G. FOURTH ANNUAL MEETING OF THE WESTERNROENTGEN SOCIETY The Western Roentgen Society held the fourth annualmeeting at Hotel Sherman, Chicago, November 20, 21, 22,1918. In spite of the existing conditions just preceding themeeting, the Society enjoyed the most instructive meetingand was favored with the largest attendance since theorganization was founded. The Chicago Medical Society extended the courtesy of ajoint meeting, as shown by the following program: OFFICIAL PROGRAMME Fourth Annual Meeting, Western Roentgen SocietyHeadquarters : Sherman House, Chicago November 20, 21, 22, 1918 PROGRAMME Wednesday Morning Session, November 20th 1. Call to order, 10 :30 oclock. 2. Reading of minutes. 3. Reports of committees. 4. Appointment, of committees. 5. Unfinished business. 6. Announcement of new members. 7. New business. 8. General announcement. Adjournment not later than 12 :30 noon. Wednesday Evening Session Joint Meeting with the Chicago Medical Society at 8 :0
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