An introduction to the bacteriological examination of water / by W.H. Horrocks.
- Horrocks, W. H. (William Heaton), Sir, 1859-
- Date:
- 1901
Licence: In copyright
Credit: An introduction to the bacteriological examination of water / by W.H. Horrocks. Source: Wellcome Collection.
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![Fia. 1. ]i. Kntekitiois, Gartner.—Surface colony in a gelatine- ])late X 100; seventy-two hours growth at 22° C. 2. Ji. Coi.i Communis.—Surface colony in a gelatine-plate X 100 ; forty-eight hours growth at 22° C. 3. B. Typhosus.—Surface colony in a gelatine-plate x 100; four days growth at 22° C. “ Ridges and valleys ” well marked. 4. Ik Acidi Lactici.—Surface colony in a gelatine-])late X 100; seventy-two hours growth at 22° C. 5. B. Typhosus,—Surface colony in a gelatine-jilate x 100 ; four days growth at 22° C. “ Glass ])ellicle ” variety of colony. f). B. Cavicida.—Surface colony in a gelatine-])late x 100; forty-eight hours growth at 22° C. 7. B. Pyoc:yaneus.—Surface colony in a gelatine-jilate X 100; thirty-six hours growth at 22° C. Lique- faction just commencing. 8. B. Vioi.ACEUS.—Surface colony in a gelatine-plate x 100; forty-eight hom*s growth at 22° C. The colony has a violet colour. Li(|uefaction has not commenced.](https://iiif.wellcomecollection.org/image/b28116525_0030.jp2/full/800%2C/0/default.jpg)
