Diagnostic methods, chemical, bacteriological and microscopical, a text-book for students and practitioners . e polynuclear and mononuclear forms may obtain. Inthis type of pleurisy the eosinophile cells may be very numerous, in one caseof Widal and Ravaut constituting 54 per cent, of the cellular elements. Theendothelial cells may be, as in the primary tubercular pleurisy, sufficientlynumerous to constitute a distinct endotheliosis. They are, however, single andvery rarely grouped in masses. Pneumococcus Pleurisy. This is a truly septic type of pleurisy and is characterized by a distinctpolyn
Diagnostic methods, chemical, bacteriological and microscopical, a text-book for students and practitioners . e polynuclear and mononuclear forms may obtain. Inthis type of pleurisy the eosinophile cells may be very numerous, in one caseof Widal and Ravaut constituting 54 per cent, of the cellular elements. Theendothelial cells may be, as in the primary tubercular pleurisy, sufficientlynumerous to constitute a distinct endotheliosis. They are, however, single andvery rarely grouped in masses. Pneumococcus Pleurisy. This is a truly septic type of pleurisy and is characterized by a distinctpolynucleosis. In the early stages of this type of pleurisy, the endothelialcells may be very numerous, while in the later stages they may be much dimin-ished. In this, as in all types of pus accumulations, marked autolysis is presentso that the cells may show extreme degeneration. As this condition progressestoward recovery, some of the polynuclears may be replaced by the mononu- • See Bxillock and Twichell (Am. Jour. Med. Sc, 1915, CXLIX, 848) for a study of exudatesin artificial pneumothorax. PLATE Exudate from Tubercular Pleurisy. (Eosin-hematoxylin Stain ) PLATE XXXVI.
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