Licence: Public Domain Mark
Credit: Sound / by John Tyndall. Source: Wellcome Collection.
Provider: This material has been provided by UCL Library Services. The original may be consulted at UCL (University College London)
472/494 (page 448)
Licence: Public Domain Mark
Credit: Sound / by John Tyndall. Source: Wellcome Collection.
Provider: This material has been provided by UCL Library Services. The original may be consulted at UCL (University College London)