Handbook of meat inspection . ), or may be observedas a Symptom of malignant catarrbal fever and rinderpest. Glanderous, actinomycotic and tuberculous alterations sbow apredilection for tbe larynx. Tbe laryngeal actinomycomata wbicbfrequently appear as primary affections in cattle are located on tbemucous membrane and are eitber pedunculate or witb a broad base(Fig. 77j. In tbe tracbea of cattle tuberculous alterations occur ontbe mucous membrane and also in tbe submucosa of tbe posteriorwall. 320 NOTEWORTHY OKGANIC DISEASES The Statement concernicg the tracliea applies also to the largerbronc
Handbook of meat inspection . ), or may be observedas a Symptom of malignant catarrbal fever and rinderpest. Glanderous, actinomycotic and tuberculous alterations sbow apredilection for tbe larynx. Tbe laryngeal actinomycomata wbicbfrequently appear as primary affections in cattle are located on tbemucous membrane and are eitber pedunculate or witb a broad base(Fig. 77j. In tbe tracbea of cattle tuberculous alterations occur ontbe mucous membrane and also in tbe submucosa of tbe posteriorwall. 320 NOTEWORTHY OKGANIC DISEASES The Statement concernicg the tracliea applies also to the largerbronchial tubes. As pathological curiosities, mention should bemade of bronchiectases and peribrouchitic processes which arise inconnection with inflammation of the mucous membrane. In the trachea of fowls, Syngamus trachealis is found as a para-site. Raillet described another species of Syngamus, S. laryngeus,as occurring frequently in the larynx and in the upper portions ofthe trachea of cattle in Anam (farther India.). Fig. Bovine larynx with an actinomycoma on the epiglottis. (c) Lungs. Atelectasis.—Atelectasis is frequently observed in the lungs offood animals. As a rule, it is a congenital peculiarity and confinedto small pulmonary areas. The parts of the lang thus affected arebrownish-red, firm, and do not coutaiu air. The bronchial tubesleading to the affected parts are, as a rule, in a catarrhal conditionin older auimals. DISSOLUTION OF CoNTiNUiTY.—In addition to gross dissolutions ofcontinuity in the lungs (from stiibs, shot wounds, broken ribs, etc.),a less extensive form should be mentioned ; namely, interlobularemphysema. This arises by rupture of the alveoli. As a conse-quence of this rupture, air appears between the alveoli in vesiclesvarying in size from a millet seed to a pea. The air vesicles underthe pleura are most sharply distiuguished from the pulmonary RESPIRATORY APrARATUS 321 tissue. lu auimala which exliibited acute djspnea during lifo andwere, the
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