A genus of BACILLACEAE that are spore-forming, rod-shaped cells. Most species are saprophytic soil forms with only a few species being pathogenic.
    

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A common cold germ asking the father of a neurasthenia bacillus if he can marry her; he is refused on account of the social gap between them. Pen drawing by C. Harrison, 1913.

Observations upon a mastitis bacillus / by Allan Macfadyen, M.D. Ed.

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Bacillus (Bacteria)

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A common cold germ asking the father of a neurasthenia bacillus if he can marry her; he is refused on account of the social gap between them. Pen drawing by C. Harrison, 1913.

Observations upon a mastitis bacillus / by Allan Macfadyen, M.D. Ed.