Johann of Laz, or Johannes von Laaz, Joannes de Lasnioro, was a Bohemian alchemist during the first half of the fifteenth century.
Little is known about Johann's life, but his name probably indicates that he came from Ledce u Židlochovic (German Laatz).
His Tractatus aureus de lapide philosophorum (The Golden Treatise on the Philosopher's Stone) was first printed in 1611 and was later reprinted in Zetzner's Theatrum Chemicum. In that text, he presents a transmutation of metals from quicksilver, sulfur, and gold. Laz also claims to be a student of the alchemist Anthony of Florence (Antonius de Florentia), who was supposed to have been murdered in Bohemia.
Benedikt Nikolaus Petraeus cites Johann of Laz in the foreword to his edition of Basil Valentine's Chymischen Schriften (1667). In that text, he discusses the supposed alchemical activity of Barbara von Cilli, widow of the Holy Roman Emperor Sigismund of Luxembourg. According to Laz, she exchanged ideas about the transmutation of metals with many merchants.
JohannofLaz, or Johannes von Laaz, Joannes de Lasnioro, was a Bohemian alchemist during the first half of the fifteenth century. Little is known about...
1336) Gilles de Rais (1401–1440) Bernard Trevisan (Bernard of Treves) (1406–1490) JohannofLaz (15th century) George Ripley (England, 15th century) Thomas...
principle of fusibility and volatility: ☿ () Salt or body, the principle of non-combustibility and non-volatility: 🜔 () Western alchemy makes use of the four...
Arabic: al-kīmiyā; from Ancient Greek: χυμεία, khumeía) is an ancient branch of natural philosophy, a philosophical and protoscientific tradition that was...
One of the earliest known ouroboros motifs is found in the Enigmatic Book of the Netherworld, an ancient Egyptian funerary text in KV62, the tomb of Tutankhamun...
The first printed edition appears in 1541 in the De alchemia published by Johann Petreius and edited by a certain Chrysogonus Polydorus, who is likely a...
still consisting of two vessels connected by a tube, used for distillation of liquids. The complete distilling apparatus consists of three parts: the...
(khrusopoiía) 'gold-making') refers to the artificial production of gold, most commonly by the alleged transmutation of base metals such as lead. A related term is argyropoeia...
overview of and topical guide to alchemy: Alchemy – A philosophical tradition recognized as protoscience, that includes the application of Hermetic principles...
studies produced a number of substances, which were later classified as particular chemical compounds or mixtures of compounds. Many of these terms were in...
Queen of Egypt, in some later works. One example of this can be found in Basilica Philosophica by Johann Daniel Mylius (1618), where her seal is pictured...
Secretorum (Latin for "secret of secrets"), also known as the Sirr al-Asrar (Arabic: كتاب سر الأسرار, lit. 'The Secret Book of Secrets'), is a treatise which...
found rendered as Jan-Baptiste van Helmont, Johannes Baptista van Helmont, Johann Baptista von Helmont, Joan Baptista van Helmont, and other minor variants...
known from the works of Zosimos of Panopolis (fl. c. 300) and other authors in the Greek alchemical tradition. On the basis of Zosimos's comments, she...
the Secreta alchymiae ('The Secret of Alchemy') attributed to Khalid ibn Yazid (c. 668–704 or 709), it is one of "the four principal operations", along...
sold the recipe for 200 thalers to a Johann Daniel Kraft (de) from Dresden. Subsequently, both Swedish chemist Johann Kunckel (in 1678) and English chemist...
medical movement based on the theories and therapies of Paracelsus. It developed in the second half of the 16th century, during the decades following Paracelsus'...
suggested that the author of the works attributed to Basil Valentine was Johann Thölde, a salt manufacturer in Germany who lived roughly 1565–1624. Modern...
the rights of citizenship in Strasbourg to establish his own practice. But soon after, he was called to Basel to the sickbed of printer Johann Frobenius...
Splendor Solis (English: "The Splendour of the Sun") is a version of the illuminated alchemical text attributed to Salomon Trismosin. This version dates...
philosopher, and medical doctor. A pioneer of chemistry, he developed ways of purification and creation of various acids, metals and other chemical compounds...
The Aurora consurgens is an alchemical treatise of the 15th century famous for the rich illuminations that accompany it in some manuscripts.: §38–44 While...
Stephen of Alexandria is another. Arabic translations of texts by Zosimos were discovered in 1995 in a copy of the book Keys of Mercy and Secrets of Wisdom...
Twelve Keys of Basil Valentine is a widely reproduced alchemical book attributed to Basil Valentine. It was first published in 1599 by Johann Thölde who...
study since the days of Berthelot, Stapleton, and Ruska to approach the Jabirian texts from a modern chemical point of view) Fück, Johann W. (1951). "The Arabic...
alchemical digestion. Etymologically, it descends from a number of Arabic texts of the period of the Caliphate which use the term "al-tannoor" in talismanic...
authors of Greek and Latin works from Hellenistic period onwards. Together with Pseudo-Zoroaster and Pseudo-Hystaspes, Ostanes belongs to the group of pseudepigraphical...
Global Information