South Africa: a pulsator machine at the Wesselton diamond mine. Photograph by A.B. Macallum, 1905.
- British Association for the Advancement of Science.
- Date:
- 1905
- Reference:
- 534694i
Licence: Public Domain Mark
Credit: South Africa: a pulsator machine at the Wesselton diamond mine. Photograph by A.B. Macallum, 1905. Wellcome Collection. Source: Wellcome Collection.
![no text alternative](https://iiif.wellcomecollection.org/image/V0038006/full/800%2C/0/default.jpg)