The public milk supply / by Hugh A. Macewen.
- Macewen, Hugh A. (Hugh Allan), 1880-1955.
- Date:
- 1910
Licence: In copyright
Credit: The public milk supply / by Hugh A. Macewen. Source: Wellcome Collection.
Provider: This material has been provided by London School of Hygiene & Tropical Medicine Library & Archives Service. The original may be consulted at London School of Hygiene & Tropical Medicine Library & Archives Service.
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![If ei-o'otized rye be .ground and made into bread, it may give rise to er^otisin in those who consume it. Persons thus affected generally suffer from vomiting and diarrhoea, which may be followed by loss of sensibility, gangrene, or paralysis. This disease is seldom or never seen in this country. Ergot is made into a drug, and being much sought after for this purpose is rarely found in flour. Puccinia graminis (Rust).—This parasite may attack wheat. Fig. 2S shows the microscopical appearance presented by a section tlirough ]iart. Fig. 30.—Moulds 1, Penicilliuii) glaucuiii. 2, Asiiergillus glaucus. 3, Mucor mucedo. (All, x 100.) of a grain of wheat affected by it. The club-shaped teleutospores are' seen growing from the surface of the grain. It is questionable whether the consumption of tliis parasite is injurious to health or not. The Moulds, Penicillmm glaucum, Aspergillus glaucus, and Mucc/r mucedo, may all be found as a greenish growth on damp grain, flour, bread, cheese, &c. Their microscopical appearances are shown in fig. 30. Animal Parasites— Acarus farincB, or meal mite. Calandra granaria. or corn weevil. Bruchus pisi, or pea bruchus. Vibrio tritici, or ear cockle. Acarus farince is occasionally found in inferioi- meal or flour, espe- cially if it be (lamp. The presence of acari may be taken as an indication that the flour is commencing to go wrong. Calandra granaria destroys the gi-ain by eating the contents and leaving the shell. Bruchus pisi, as-](https://iiif.wellcomecollection.org/image/b21357870_0189.jp2/full/800%2C/0/default.jpg)
