¹ Nor does she mention Agricola's De metallis which according to Humphrey Newton (whose account Mrs Dobbs otherwise accepts), Newton constantly consulted during his experiments—hardly an alchemical work, and certainly not concerned with transmutation in any mystic sense, although Newton could well have learned much from it about smelting, purifying and assaying metals.

² Westfall, R. S., Force in Newton's physics. The science of dynamics in the seventeenth century. (London and New York, 1971), pp. 323–423.Google Scholar

³ ‘Newton's chemical experiments’, Archives internationales d'histoire des sciences, xi (1958), 113–52.Google Scholar