Experiments and observations on the light which is spontaneously emitted, with some degree of permanency, from various bodies. / By Nathaniel Hulme, M.D. F.R.S. and A.S. From the Philosophical Transactions.

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Experiments and observations on the light which is spontaneously emitted, with some degree of permanency, from various bodies. / By Nathaniel Hulme, M.D. F.R.S. and A.S. From the Philosophical Transactions. Public Domain Mark. Source: Wellcome Collection.