. 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. ANTHRAX. 195 or specks, which, on examination with a low power of the microscope and small diaphragm, exhibit two distinct forms. One form, on careful focussing, has the appearance of a little compact ball of 1. Fig. 96.—Margin of a Colony, x twisted threads; in the other, liquefaction of the gelatine has commenced, and the threads spread out like locks oi' plaits of hair in the neighbonring gelatine. These appeara
. 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. ANTHRAX. 195 or specks, which, on examination with a low power of the microscope and small diaphragm, exhibit two distinct forms. One form, on careful focussing, has the appearance of a little compact ball of 1. Fig. 96.—Margin of a Colony, x twisted threads; in the other, liquefaction of the gelatine has commenced, and the threads spread out like locks oi' plaits of hair in the neighbonring gelatine. These appearances are perfectly characteristic (Figs. 94, 96). Cover-glass Impressio7is.—The plate-cultivations should be also examined as soon as the colonies appear, by making cover-glass im- pressions (Fig. 95). The filaments, examined with a high power, will be .seen to consist of a number of rods or segments which are perfectly regular in form. On the other hand, filaments from a tube-cultiva- tion in a solid medium will often be found to be composed, not only of rods, but here and there of the so- called involution-forms (Fig. 97). ria, From cultures in gelatine and glycerine agar, very sti-iking preparations are sometimes obtained, with numerous large spherical and lemon-shaped elements. In' a. Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the original Crookshank, Edgar M. (Edgar March), 1858-1928. Philadelphia, W. B. Saunders
Size: 1587px × 1575px
Photo credit: © The Book Worm / Alamy / Afripics
License: Licensed
Model Released: No
Keywords: ., bookcentury1800, bookdecade1890, bookpublisherphila, bookyear1897
