De secretis naturae, seu De quinta essentia liber unus [...]. Adiecta est eiusdem epistola ad regem Robertum de Accurtatione lapidis philosophorum : cui adiunctus est tractatus de aquis ex scriptis Raymundi super Accurtationis epistolam ad artis studioso collectus.

8vo: [8]-376 pp. (marginal staining and foxing).

Contemporary binding: limp vellum, ink-titled flat spine (sm. def., stained).

Alchemical-medical work (1st ed.: Strasbourg 1541), most probably to be listed in the apocryphal texts of Llull, and now often attributed to Ramon de Tarrega, "converted Jew whose devotion to the occult sciences, and the censures his works provoked are strong proofs that if he dit not write all the alchemical books, he was the author of some of them" (cfr Ferguson II-54). Illustrated with a full-page woodcut figuring an athanor. Ms. ownership entry on title crossed out. Ref. VD-16 R-160.- STC German (BL) 533.- Cp. Caillet 6858 (1542 Venice ed.).- Not in Dorbon (Biblioth. esoterica), Duveen (other ed.), Ferguson (id.), Machiels (id.), Adams (id.), Soltész (id.). Joined: GESNER, Konrad (under the pseud. of PHILIATRE, Evonime].- Trésor des remèdes secretz [...]. Lyon, Wid. B. Arnoullet, 1558, 8vo, 18th-c. sheepskin (non collated, pp. 407-410 missing, ms. provenances on title-page, light dampstains throughout, small defects). Work dealing with distillation, translated by Barthélemy Aneau and illustrated with small woodcuts in the text. The first edition was pusblished in Latin in 1552 and in French in 1555; Ref. Pettegree FB 22788 (Wid. B. Arnoullet & A. Vincent, [48]-440-[8] pp.).- Durling 2083.- Cp. Baudrier X:149-150 (1555 ed.).- Cp. Gültlingen IX:128:154/155 (1557 Fr. ed.) and IX:130:163/164 (1558 Latin ed.).- Not in STC French (BL), Wellcome. Together 2 works Provenance: G. Mazuyer (modern bookplate).