. A text-book upon the pathogenic Bacteria and Protozoa for students of medicine and physicians. Bacteriology; Pathogenic bacteria; Protozoa. Specific Organism 545 Plague," finds it convenient to divide plague into (a) bubonic or ganglionic, (b) septicemic, and (c) pneumonic forms. Of these, the bubonic form is most frequent and the pneumonic form most fatal. Specific Organism.—The bacillus of bubonic plague was inde- pendently discovered by Yersin* and Kitasatof in the summer of 1894, during an epidemic of the plague then raging at Hongkong, There seems to be little doubt but that the mi
. A text-book upon the pathogenic Bacteria and Protozoa for students of medicine and physicians. Bacteriology; Pathogenic bacteria; Protozoa. Specific Organism 545 Plague," finds it convenient to divide plague into (a) bubonic or ganglionic, (b) septicemic, and (c) pneumonic forms. Of these, the bubonic form is most frequent and the pneumonic form most fatal. Specific Organism.—The bacillus of bubonic plague was inde- pendently discovered by Yersin* and Kitasatof in the summer of 1894, during an epidemic of the plague then raging at Hongkong, There seems to be little doubt but that the micro-organisms de- scribed by the two observers are identical. Ogatat states that while Kitasato found the bacillus in the blood of cadavers, Yersin seldom found it in the blood, but always in the enlarged lymphatic glands; that Kitasato's bacillus retains the color when stained by Gram's method; Yersin's does not; that Kitasato's bacillus is motile; Yersin's non-motile; that the colonies of Kitasato's bacillus, when grown upon agar, are round, Fig. 225.—Bacillus of bubonic plague (Yersin). grayish white, with a bluish tint, and resemble glass-wool when slightly magnified; those, of Yersin's bacillus, white and transparent, with iridescent edges. Ogata, in his investigations, found that the bacillus corresponded with the description of Yersin rather than that of Kitasato, and it is certain that of the two the description given by Yersin is the more correct. In the "Japan Times," Tokio, November 28, 1899, Kitasato explains that, his investigations being made upon cadavers that were partly putrefied, he was led to beUeve that the bacillus first invaded the blood. Later studies upon living subjects showed him the error of this view and the correctness of Yersin's observation that the bacilli first multiply in the lymphatics. Both Kitasato and Yersin showed that in blood drawn from the * "Ann. de I'Inst. Pasteur," 1894, 9. t Preliminary notice to
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Keywords: ., bookcentury1900, bookdecade1910, booksubjectbacteri, bookyear1916
