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Temper of Herbs by Robert Allen Bartlett

In this landmark exploration of the qualities of elemental degree, Robert Allen Bartlett sets up ancient alchemical natural philosophy against modern lab equipment. In the span of 150 pages, he outlines the historical basis for assigning temperament to an herb, and then presents raw laboratory data, in some cases copied facsimile from his own notes, to probe how chemistry either confirms or denies the results achieved through traditional alchemical theory and medical practice.

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