The wards of the key to Helmont proved unfit for the lock, or, The principles of Mr. William Bacon examined and refuted : and the honour and value of true chymistry asserted / by John Case.

A key to Helmont, or, A short introduction to the better understanding of the theory and method of the most profound chymical physicians.

A key to Helmont or a short introduction to the better understanding of the theory and method of the most profound chymical physicians / [William Bacon].

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Bacon, William

Works from the collections

A key to Helmont, or, A short introduction to the better understanding of the theory and method of the most profound chymical physicians.

A key to Helmont or a short introduction to the better understanding of the theory and method of the most profound chymical physicians / [William Bacon].