Sanguine is a rich, reddish-brown chalk beloved by Renaissance artists such as Michelangelo. Creating flesh-like tones in the human form...

Hydrochloric acid is a powerful chemical. Used from old alchemical practices to modern times, this colorless, pungent-smelling liquid is...

The Renaissance brings a unique approach to medicine. Based on the Four Humors theory of health the Galenic way, purging the body of...

Alchemy seeks the magnum opus or great work. This twelve step program comes from the anonymous Ripley Scroll, so called as alchemist...

The Scientific Revolution, from 1543 to 1687, transforms human understanding of the natural world. This period involves events and...

Jan Baptist van Helmont (1580 - 1644) is a Flemish physician, alchemist / chemist and natural philosopher. A disciple of Paracelsus , he...

Circulation is one of many processes of alchemy. The purification of a substance is achieved through circular distillation in a pelican...

Toxic heavy metals cadmium, mercury, lead, chromium, and arsenic are elements known for high density and toxicity even in small amounts....

A separatory funnel is an essential piece of laboratory equipment used in liquid-liquid extractions, allowing alchemists to separate...

Decomposing horse manure is essential in the alchemical process of digestion. A flask of substances is buried in dung. As if by magic the...

Microbiology explores the world of microbes or micro-organisms. It reveals a hidden dimension of unseen forces shaping health,...

Acetobacter bacteria are a group of acetic acid bacteria species integral to natural processes such as turning wine to vinegar. Their...

Gouache painting has a unique charm and offers versatility for artists and art appreciators. This unctuous type of paint delivers vibrant...

Gum arabic, also known as acacia gum, is a natural substance derived from sap of Acacia trees, especially Acacia senegal . This sticky,...

Soot, also loosely called lampblack or carbon black, is traditionally used to make ink, painters' pigment, medicines and makeup. A...

Flowers of sulfur, often termed flowers of brimstone, are crumbly pale yellow powders popular with chemists, botanists, and artisans....

Potassium Hydroxide, also known as caustic potash, has a history dating back to ancient times. A versatile chemical compound, it's used...

Fermentation and rot are natural processes. While they may seem synonymous, a closer look reveals the differences between the two....

Molybdochalkos is a blend of copper and lead. It's the standard metal used in the kerotakis, an alchemical creation attributed to Maria...

Hildegard von Bingen is a German Benedictine abbess and polymath often called the Sibyl (Prophetess) of the Rhine. She transcends...