Natural Science, Vol. 13: A Monthly Review of Scientific Progress; July December, 1898 (Classic Reprint) - Softcover

Inhaltsangabe

Excerpt from Natural Science, Vol. 13: A Monthly Review of Scientific Progress; July December, 1898

There are some species of bacteria which are sharply marked off: thus the tetanus bacillus is one which both morphologically and in its pathogenic powers is a distinct and definite species. The typhoid bacillus and B. Colt communis are members of a group in which the reverse is the case. The epidemiology of typhoid fever can leave no doubt on the mind that B. Typhosus is a distinct and fixed species; yet apart from the disease it produces, its certain recognition is, as above indicated, not always so easy a matter. The colon bacillus occurs in countless varieties, and has been described under many different names. Its specific characters are ill-marked, and it is probably a rapidly varying dominant species, the characters of which are not yet fixed.

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