Hints from the Health Department. Leaflet from the archive of the Society of Medical Officers of Health. Credit: Wellcome Collection, London
[Report of the Medical Officer of Health for Croydon]
This page requires JavaScript
| No. Samples Taken. | Methylene Blue Test. | Phosphatase Test. | ||
|---|---|---|---|---|
| Not Satisfied. | Satisfied. | Not Satisfied. | Satisfied. | |
| 334 | 2 | 332 | 1 | 333 |
| No. Samples Taken. | Turbidity Test. | ||
|---|---|---|---|
| Not Satisfied. | Satisfied. | ||
| 4 | Nil | 4 | |