A manual of the injuries and surgical diseases of the face, mouth, and jaws.

  • Marshall, John Sayre, 1846-1922.
Date:
1902
Catalogue details

Licence: Public Domain Mark

Credit: A manual of the injuries and surgical diseases of the face, mouth, and jaws. Source: Wellcome Collection.

Provider: This material has been provided by the Augustus C. Long Health Sciences Library at Columbia University and Columbia University Libraries/Information Services, through the Medical Heritage Library. The original may be consulted at the the Augustus C. Long Health Sciences Library at Columbia University and Columbia University.

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    Streptococcus of erysipelas, the only discernible difference being one of size, the coccus of erysipelas being the larger. The cocci multiply only by fission or division, a process similar to karyokinesis (Fig. ii). The cell elongates prior to its segmentation, when a constriction appears in the center, which becomes deeper and deeper until complete division of the cell into two equal parts takes place. These new cells soon attain the size of the parent cell. Fig. 10. •-?? Streptococcus pyogenes. X 1200. ^00 CO 00^ Fig. II. O @ Fission of Bacteria (Cocci). a and d, Fissation in one direction ; b, in two ; c, in three directions. The staphylococci, diplococci. and streptococci are generally found in the broken-down tissue and discharges w^hich result from in- flammatory action, particularly in pus formations. The Bacillus is an individual bacterium of rod-like form, and in- cludes all the elongated forms of bacteria, except such as are spiral and have a gyratory motion, which are classed with the genus Spirillum. A Spirillum is an individual bacterium whose elements are curved, often forming a spiral of several turns. The comma bacillus of Koch,