A SEVENTEENTH-CENTURY HOAX
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belief in the fraudulent character of the work and that Thölde himself was the writer as well as the editor of the alleged Basil Valentine works. With reference to this Thölde, Professor John Ferguson, of the University of Glasgow, the first of British students of chemical literature of this period, in his "Bibliotheca Chemica" (1906), gives some pertinent information and ideas.
Ferguson calls attention to the fact that Thölde published a work in his own name "Haliographia," on salts, salt works, etc. (1603). It consists of four parts. Ferguson says:
Subsequently ("Die Alchemie," 1886, I., pp. 29-33) Kopp changed his views regarding Thölde and Basil Valentine, and said that there is reason to think that the writings of the latter were composed about the end of the sixteenth or the beginning of the seventeenth century instead of a hundred years earlier; that Basil Valentine's name is fictitious; that the publication of these writings was an intentional literary deception; and in that case that the responsibility must rest with Thölde. It is very remarkable that in this view, so decidedly, uncompromisingly, different from that enunciated by him eleven years earlier he should have come to exactly the same result as that elaborated one hundred years earlier and expressed with emphasis by the author of "Beytrag," a work which, so far as I have observed, was unknown to Kopp, as I do not think that he ever refers to it.
Professor Ferguson in his comments on Kopp's change of views between 1875 and 1886 seems to have overlooked or forgotten that even
- ↑ Schmieder, "Geschichte der Alchemie," in his bibliography of Basil Valentine gives 1612 and 1644 as dates of these editions.