. A practical treatise on medical diagnosis for students and physicians . a network of fibres. If the mass be broken up, numerous club-shaped forms are seen at the periphery, while at the centre a sort ofdetritus alone is observed. The micro-organism belongs to the class offission-fungi, and the club-shaped bodies are the degenerated forms. (SeeFig. 325.) Grams method of staining brings out the threads of the network mostdistinctly. The centre is made up of a network of minute sphericalorganisms, with converging, constituent threads. The whole is sur-rounded by a delicate envelope. The pear-sh
. A practical treatise on medical diagnosis for students and physicians . a network of fibres. If the mass be broken up, numerous club-shaped forms are seen at the periphery, while at the centre a sort ofdetritus alone is observed. The micro-organism belongs to the class offission-fungi, and the club-shaped bodies are the degenerated forms. (SeeFig. 325.) Grams method of staining brings out the threads of the network mostdistinctly. The centre is made up of a network of minute sphericalorganisms, with converging, constituent threads. The whole is sur-rounded by a delicate envelope. The pear-shaped bodies may be definedby Weigerts process. Make a solution of 20 of absolute alcohol,5 of concentrated acetic acid, 40 of distilled water, and sufficientFrench extract of litmus to color it ruby-red after repeated filtering. Inthis solution the cover-glass preparations are allowed to remain for anhour, and then rinsed with alcohol rapidly and placed in a 2 per cent,gentian-violet solution for three minutes. The fluid should be boiled PLATE . Section through wall of brain abscess showingcharacter of streptothrix colony. Stained withhsematoxylin, followed by modified Gram-Weigertmethod, 1/12 in. homog. immersion objective. STREPTOTHRICAL INFECTIONS. 811 before use and filtered after cooling. The fungous threads are stained aruby-red, while the central mass of actinomyces is colorless. Diagnosis. H. D. Diseased teeth or mouth, exposure. S. D. Painful indolent swelling ; symptoms of empyema or bronchitis. 0. D. Swelling about jaw slowly suppurates ; bone disease; metas-tases ; pyaemia; enteritis. P. D. Some cases ; empyema ; bronchopneumonia. L. D. Pus ; smears ; sputum ; exploratory puncture ; ray fungus. D. D. Suppurations ; pulmonic affections ; enteritis. Simple microscopical examination is usually sufficient to determine thenature of the fungus. The recognition is more positive if we bear inmind the peculiar character of the pus in which the nodule
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