Public Domain Mark
You can use this work for any purpose without restriction under copyright law. Read more about this licence.
Credit
The aphemetric compass : an instrument for measuring the degree of discriminative power, as regards contactile impressions, enjoyed by the skin and mucous membranes in certain affections of the nervous system / by John W. Ogle, M.D. Public Domain Mark. Source: Wellcome Collection.
Provider
This material has been provided by The University of Glasgow Library. The original may be consulted at The University of Glasgow Library.