. The elements of pathological histology with special reference to practical methods . form of small slenderhighly-motile rodlets with rounded ends, which frequently unite toform short filaments. It grows at room temperature, and is characterised by the formationof a green fluorescent pigment {pyocyanin) in gelatin, the latterbeing at the same time liquefied. Upon agar and iMatoes there formsa yellowish coating, and the neighbouring parts are stained green. Avariety of the above is the Bacillus pijocyancus /3, which produces ablue pigment. Both occur in pus when the conditions are favourable,c
. The elements of pathological histology with special reference to practical methods . form of small slenderhighly-motile rodlets with rounded ends, which frequently unite toform short filaments. It grows at room temperature, and is characterised by the formationof a green fluorescent pigment {pyocyanin) in gelatin, the latterbeing at the same time liquefied. Upon agar and iMatoes there formsa yellowish coating, and the neighbouring parts are stained green. Avariety of the above is the Bacillus pijocyancus /3, which produces ablue pigment. Both occur in pus when the conditions are favourable,commonly together, and they then produce a bluish-green colorationof the fluid. The Bacillus pyocyaneus is pathogenic for guinea-pigs and rabbits, itsintroduction setting up suppurative processes which may even result indeath. 7. (iv.) Streptococcus Erysipelatis.—This micro-organism cannot bedistinguished either morphologically or by cultivation from the Strepto-coccus pyogenes. In experiments on animals, however, and still more in -? 6^ ? If) ^-^(i|;\ fm^; ;: •?^•^ i;\^. c Fig. 57.—Erysipelas of thk Skin, x 550. The cocci drawn in undera power magnifying 980 times. (Stained by Weigerts modincation of Gramsmethod.) a, Lymphatic vessel partly distended by accumulation of mono-and polymiclear leucocytes, with erysipelas cocci inside and outside the cells;b. Endothelial cells of the lymphatic vessel; c, Adjoining cutis, permeated byleucocytes and proliferated connective-tissue cells. its behaviour in the human organism, certain differences do exist,which justify, at least provisionally, a separation of the two; pre-supposing, of course, that a general distinction is also made betweenerysipelas and phlegmon. Thus, when a subcutaneous inoculation is 122 THE VEGETABLE PARASITES made into a rabbits ear, there is apt to ensue often merely a superficialinflammation resembling erysipelas in man, whereas a similar introduc-tion of Streptococcus pyogenes is followed at times by proc
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Keywords: ., bookcentury1800, bookdecade1890, booksubjectpatholo, bookyear1895
