. The elements of pathological histology with special reference to practical methods . he spleen. Trans-mission of blood containing the spirilla has been successful in setting-up relapsing fever in men and apes. Methods.—The blood is examined either in the hanging drop, or in driedpreparations stained with aqueous fuchsin or alkaline methyl blue. In theformer the spirillum betrays its presence even under a low power by thecurrents which it sets up in the fluid. To avoid overlooking the spirilla when ACTINOMYCES 157 present in very scanty amount, some grammes of blood should be drawn witha cupp
. The elements of pathological histology with special reference to practical methods . he spleen. Trans-mission of blood containing the spirilla has been successful in setting-up relapsing fever in men and apes. Methods.—The blood is examined either in the hanging drop, or in driedpreparations stained with aqueous fuchsin or alkaline methyl blue. In theformer the spirillum betrays its presence even under a low power by thecurrents which it sets up in the fluid. To avoid overlooking the spirilla when ACTINOMYCES 157 present in very scanty amount, some grammes of blood should be drawn witha cupping-glass and allowed to coagulate, when the spirilla often accumulate ingroups of considerable size at the periphery of the clot. Sections are stained with Lotiiers or Kiihnes methyl blue. {d) ADDENDUM TO THE BACTERIA. 24. Actinomyces.—The actinomyces or ray-fungus (Fig. 69) is atthe present day rather generally counted amongst the Cladotrichece,which again may either be ranked with the bacteria, or else con-stituted as a separate class in themselves. It usually appears in the. Fig. 09.—Actinomyces Nodulr, with Granulation Tissue. Section, x 530.(Stained by modification of Grams method.) a, Fan-shaited bundle ofrays with (ilub-like swelling of the ends; b, Bundle of raysc»it transveisely ;c, Clubs lying singly ; d. Network composed of branching and partly granular fibres;e, Granulation tissue. form of groups of considerable size, which can be recognised evenwith the naked eye as grey, whitish, or yellowish granules aboutthe size of a pins head or even smaller. When these are examinedin cover-glass preparations (by pressing or rubbing them), in additionto numerous filaments, there are found also structures resemblingrodlets and cocci. The filaments always appear more or less un-dulating, sometimes even spirally curved, single or branched, fre-quently with club-shaped swellings at their free ends, and more or lessdistinctly segmented. As the segments are of diff
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Keywords: ., bookcentury1800, bookdecade1890, booksubjectpatholo, bookyear1895
