[liii]

Starkey gives the age of Eirenaeus Philalethes as 33 in 1654. This precisely confirms the writer's own statement in the earlier editions of the Introitus Apertus that he was 23 in 1645, and fixes the birth-date as 1621 or 1622. Now this agrees remarkably with the birth-date ascertained from other sources of Thomas Vaughan. But Thomas died in 1666, and it is usually asserted that Eirenaeus Philalethes lived until at least 1678. Miss Vaughan states that he must have been alive in that year, because he then published the Ripley Revived, and the Enarratio Trium Gebri Medicinarum. She declares that the author of the Enarratio mentions the pains taken about that edition (p. 240). I do not find any prefatory matter in this book at all. There is a preface to the Ripley Revived, but this was written long before 1678, for it mentions the Introitus Apertus, published in 1667, as still in manuscript. Neither Jean Lange, the editor of the Introitus Apertus of 1667, writing 9th December, 1666, nor William Cooper, the editor of the English translation[liv][39] of 1669, writing 15th September, 1668, know whether the author is still alive. In fact he cannot be shown to have outlived Thomas Vaughan, for there is no proof that the adept who showed the philosopher's stone to Helvetius on December 27th, 1666,[40] was the same as he who showed it to George Starkey many years before. I will briefly enumerate a few other links which connect Eirenaeus Philalethes with Thomas Vaughan. A German translation of the Introitus Apertus, published at Hamburg under the title of Abyssus Alchemiae (1704), is said on the title-page to be "von T. de Vagan." Miss Vaughan states that a similar translation of the first of the Tres Tractatus, published at Hamburg in 1705, also bears this name (p. 237), and this is borne out by Lenglet-Dufresnoy (iii. 261-6), who speaks of a French MS. of the Tres Tractatus inscribed "par Thomas de Vagan, dit Philalèthe ou Martin Birrhius." Birrhius, however, was only the editor. These ascriptions are probably made on the authority of G. W. Wedelius, who in his preface, dated 2nd Sept., 1698, to an edition of the Introitus Apertus, published at Jena in 1699, says of the author:—"Ex Anglia tamen vulgo habetur oriundus ... et Thomas De Vagan appellatus." The English Three Tracts (1694) are stated on the title-page to have been[lv] written in Latin by Eirenaeus Philalethes; but there is a note in the British Museum Catalogue to the effect that the Latin original has the name Eugenius Philalethes. Unfortunately this Latin Tres Tractatus, published in 1668 by Martin Birrhius at Amsterdam, is not in the Library, and I cannot verify the statement. Finally, I may note that the Ripley Revived (1678) has an 

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