Two essays: one upon single vision with two eyes; the other on dew / A letter to the Right Hon. Lloyd, Lord Kenyon [on the case of Dr. Stanger], and an account of a female of the white race of mankind, part of whose skin resembles that of a negro; with some observations on the causes of the differences in colour and form between the white and negro races of men. By the late William Charles Wells ... With a memoir of his life, written by himself.

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Two essays: one upon single vision with two eyes; the other on dew / A letter to the Right Hon. Lloyd, Lord Kenyon [on the case of Dr. Stanger], and an account of a female of the white race of mankind, part of whose skin resembles that of a negro; with some observations on the causes of the differences in colour and form between the white and negro races of men. By the late William Charles Wells ... With a memoir of his life, written by himself. Public Domain Mark. Source: Wellcome Collection.