. A text-book of bacteriology, including the etiology and prevention of infective diseases and a short account of yeasts, and moulds, haematazoa, and psorosperms. Bacteriology. Fig. 223.—Peoteus Vulgaris, from Surface of Nutrient Gelatine, x (Hauser). are observed on the surface of the nutrient gelatine, although at this early stage no superficial liquefac- tion can be detected. Probably the movements depend upon the exist- ence of a thin liquid layer, as they are not observed if the nutrient medium contains 10 per cent, of gelatine. They were isolated from putrid meat infusion. Proteus Zenker
. A text-book of bacteriology, including the etiology and prevention of infective diseases and a short account of yeasts, and moulds, haematazoa, and psorosperms. Bacteriology. Fig. 223.—Peoteus Vulgaris, from Surface of Nutrient Gelatine, x (Hauser). are observed on the surface of the nutrient gelatine, although at this early stage no superficial liquefac- tion can be detected. Probably the movements depend upon the exist- ence of a thin liquid layer, as they are not observed if the nutrient medium contains 10 per cent, of gelatine. They were isolated from putrid meat infusion. Proteus Zenkeri.—Cocci -4 /i, in twos like Bacterium termo, and short rods 1'65 \i. long. Cultivated on nutrient gelatine no liquefaction results, but a thick whitish-grey layer is formed. The bacilli are motile, and the same phenomena are observed on the solid medium as in Proteus vulgaris. In cover-glass impressions most varied groupings of the bacilli are seen, and also developmental and involution-forms. They were isolated from putrid meat infusion. Pseudo-diphtheritic bacil- lus (p. 335). Pseudo-diplococcus pneu- moniae (Bonome).—Oval cocci in pairs and short chains ; cap- sulated. Inoculated in the depth of gelatine small colonies develop in the track of the needle in twenty-four hours. On agar there is a scanty,, moist growth. On potato an almost in- visible film. In broth the cocci grow rapidly, and the cultures give off a peculiar odour. They produce septicaemia in mice, guinea-pigs and rabbits. This micro-organism is probably a variety of the pneumococcus. They were isolated from a fatal case of cerebro-spinal meningitis. Rhabdomonas rosea.— Spindle-form rods, 3'8 to 5 fi broad, 20 to 30 /x long. They exhibit slow, trembling move- ments, having at each end of the cell a flagellum. The cell-substance is very pale, with dark grains interspersed. They occur in brackish water. S a r 0 i n a alba.—Small cocci. They form small white colonies on nutrient gelatine. Inoculated in
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Keywords: ., bookcentury1800, bookdecade1890, bookpublisherphila, bookyear1897
