A letter to Mr. Clare, surgeon, on his new and easy method of introducing mercury into the system through the orifices of the absorbent vessels on the inside of the mouth / [William Turnbull].

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A letter to Mr. Clare, surgeon, on his new and easy method of introducing mercury into the system through the orifices of the absorbent vessels on the inside of the mouth / [William Turnbull]. Public Domain Mark. Source: Wellcome Collection.