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Mummy brown

Mummy brown is a science topic covered in the lgStudy science library. This page brings together a partial reference excerpt, illustrations, worked examples, real-world applications and a short study plan, so you can understand Mummy brown rather than just read about it. In short: Mummy brown, also known as Egyptian brown or Caput Mortuum, is a shade of brown with good transparency, sitting between burnt umber and raw umber in tint. Its bituminous pigment was made from the flesh of mummies mixed with white pitch and myrrh.

Mummy brown — main illustration
Mummy brown — illustration

Key takeaways

  • Mummy brown belongs to science; place it in that map before memorising details.
  • Learn the definition first, then one example that makes the definition concrete.
  • Connect Mummy brown to a quantity you can measure, compute or draw — that is where exam questions come from.
  • Reproduce the core statement of Mummy brown from memory before moving on to harder problems.

Reference excerpt

Mummy brown, also known as Egyptian brown or Caput Mortuum, is a shade of brown with good transparency, sitting between burnt umber and raw umber in tint. Its bituminous pigment was made from the flesh of mummies mixed with white pitch and myrrh. Mummy brown was extremely popular from the mid-eighteenth to the nineteenth centuries, predominantly with Western European artists. However, fresh supplies of mummies diminished, and artists were less satisfied with the pigment's permanency and finish. By 1915, demand had significantly declined. Suppliers ceased to offer it by the middle of the twentieth century. Mummy brown was one of the favourite colours of the Pre-Raphaelites. It was used by many artists, including Eugène Delacroix, William Beechey, Edward Burne-Jones, Lawrence Alma-Tadema, and Martin Drolling.

History

Before "mummy brown" was used as a pigment, Egyptian mummies had a reputation for medicinal qualities. People used materials derived from mummies to treat a wide range of medical complaints, from toothaches to dysentery. The exact start of the use of mummy brown is unclear. A 1594 document mentions it but it credits a document dating back to the 12th century. The pigment was made from the flesh of Egyptian mummies or Guanche mummies of the Canary Islands (both human and feline), mixed with white pitch and myrrh. The earliest record of the use of mummy brown dates back to 1712 when an artist supply shop called "À la momie" in Paris sold paints, varnish, and powdered mummy. In 1797, a Compendium of Colours published in London proclaimed that the finest brown used as a glaze by Benjamin West, the president of the Royal Academy, "is the flesh of mummy, the most fleshy are the best parts." The pigment was popular from the mid-eighteenth to the nineteenth centuries. However, the demand for mummy brown sometimes exceeded the available supply of true Egyptian mummies, leading to occasional substitution of contemporary corpses of enslaved people or criminals. In aftermath of the French Revolution, the hearts of French kings were taken from the then Abbey of Saint-Denis, and used to make paint. By 1849, it was described as being "quite in vogue." In 1881, the artist Edward Burne-Jones (a member of the so-called "Pre-Raphaelite Brotherhood") was reported to have ceremonially buried his tube of mummy brown in his garden when he discovered its true origins. According to Georgiana Burne-Jones, "Edward scouted the idea of the pigment having anything to do with a mummy − said the name must be only borrowed to describe a particular shade of brown," but after being assured by fellow painter Lawrence Alma-Tadema, who saw a mummy in his colourman workshop before it was ground up, Edward insisted on giving his only tube of mummy brown a "decent burial there and then." Towards the end of the nineteenth century, mummy brown began to fall out of popularity. Fresh supplies of mummies diminished, and artists were less satisfied with the pigment's permanence and finish. By 1915, demand for mummy brown had slowed so much that one London colourman claimed he could satisfy his customers' requests for twenty years from a single Egyptian mummy. By the start of the 20th century, mummy brown had largely ceased production in its traditional form due to a continued decline in the supply of available mummies as well as a significant drop in demand. In 1964, Time magazine reported that the sole distributor of the pigment, London colourmaker C. Roberson, had run out of mummies a few years prior. A tube of mummy brown pigment purchased from Roberson in early 1900s is on display at the Forbes Pigment Collection of the Harvard Art Museum.

Visual characteristics

Ancient mummy brown is a rich brown pigment with a warm vibrancy. The colour is intermediate in tint between burnt umber and raw umber. It has good transparency. It could be used in oil paint and watercolour for glazing, shadows, flesh tones, and shading.

Modern alternative The modern equivalent sold as "mummy brown" is composed of a mixture of kaolin, quartz, goethite, and haematite; with the haematite and goethite (generally 60% of the content) determining the colour. The more haematite, the redder the pigment, while the others are inert substances that can vary the opacity or tinting strength. The colour of mummy brown can vary from yellow to red to dark violet, the latter usually called "mummy violet".

Permanence Mummy brown exhibits poor permanence. According to Field, "little reliance" should be placed on this brown. It fades easily and cracks when used alone. However, when mixed with oil paints, it dries and the tendency to crack is diminished. It was also extremely variable in its composition and quality, and since it contained ammonia and particles of fat, it was likely to affect other colours it was used with.

Notable occurrences

Many artists, including Eugène Delacroix, William Beechey, Edward Burne-Jones, Lawrence Alma-Tadema, and Martin Drolling, are thought to have used mummy brown in their palettes. However, few works have been tested for its presence because the process is destructive. Some popular paintings included in previous articles and research papers are thought to have been painted with mummy brown based on their visual characteristics. Examples include the Last Sleep of Arthur in Avalon by Edward Burne-Jones, Interior of a Kitchen by Martin Drolling, and Liberty Leading the People by Eugène Delacroix.

See also Caput mortuum (pigment), a pigment also known as 'cardinal purple' Mummia, a medicinal preparation sometimes made from mummies

Notes

References

Burne-Jones, Georgiana (1906). Memorials of Edward Burne-Jones. New York, NY: Macmillan Co. Eastaugh, Nicholas (2004). Pigment Compendium: A Dictionary of Historical Pigments. Butterworth-Heinemann. p. 81. ISBN 978-0-7506-5749-5. Church, A. H. (1901). The Chemistry of Paints and Painting. London: Seeley and Co. Mayer, Ralph (1945). A Dictionary of Art Terms and Techniques. New York: Harper and Row Publishers.

Illustrations

Mummy brown illustration
Mummy brown: Egyptian mummy seller (1875, Félix Bonfils)
Egyptian mummy seller (1875, Félix Bonfils)
Mummy brown: Mummy brown (located at number 10) along with other browns
Mummy brown (located at number 10) along with other browns
Mummy brown: Edward Burne-Jones' Last Sleep of Arthur in Avalon was probably drawn using mummy brown[4]
Edward Burne-Jones' Last Sleep of Arthur in Avalon was probably drawn using mummy brown[4]
Mummy brown: Martin Drolling's Interior of a Kitchen is believed to have been painted with an extensive use of mummy brown[4]
Martin Drolling's Interior of a Kitchen is believed to have been painted with an extensive use of mummy brown[4]

Worked examples

Example 1 — a first encounter with Mummy brown

Start with the simplest possible case. Write down what Mummy brown claims or describes in one sentence, then invent the smallest concrete situation in which that sentence is true. In science, the smallest case is usually a single object, a single equation or a single measurement. Check that every symbol or term in your sentence has a meaning in that case.

Example 2 — changing one variable

Take the situation from Example 1 and change exactly one quantity: double it, halve it, or set it to zero. Predict what should happen to Mummy brown before you calculate. Comparing your prediction with the result is the fastest way to find out whether you understand the idea or only the words.

Example 3 — an exam-style question

Typical questions about Mummy brown ask you to (a) state it precisely, (b) apply it to given data, and (c) explain a limitation. Practise writing all three answers in under five minutes; the third part is what separates a full-mark answer from an average one.

Applications of Mummy brown

In research
Mummy brown appears in science research whenever the underlying quantities have to be modelled precisely. Papers usually cite it as a starting assumption and then explore where it breaks down.
In technology and industry
Engineering practice reuses Mummy brown in design rules, simulations and safety margins. Knowing the idea lets you read a specification sheet and understand why the numbers look the way they do.
In the classroom
Mummy brown is common in secondary-school and first-year university syllabi. It links to neighbouring topics Iron oxide pigments, Mummies, Pigments, so understanding it makes those chapters shorter.
In everyday life
Look for Mummy brown outside the textbook — in sport, cooking, traffic, electronics or the sky above you. An example you found yourself is remembered far longer than one you were given.
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How to study Mummy brown in 20 minutes

  1. Read the reference excerpt below once, without taking notes.
  2. Close the page and write down what Mummy brown means in your own words.
  3. Compare your version with the excerpt and mark what you missed.
  4. Work through the three examples above with pen and paper.
  5. Explain Mummy brown out loud to somebody else — or to Teacher Smith in the lgStudy chat.

Frequently asked questions

What is Mummy brown in simple terms?

Mummy brown, also known as Egyptian brown or Caput Mortuum, is a shade of brown with good transparency, sitting between burnt umber and raw umber in tint. Its bituminous pigment was made from the flesh of mummies mixed with white pitch and myrrh.

Why does Mummy brown matter?

Because it connects several science ideas at once: it gives you a definition you can apply, a quantity you can calculate, and a way to check whether a result is plausible.

How should I study Mummy brown?

Read the excerpt, restate it from memory, then work through the examples and applications listed on this page. The five-step study plan above takes about twenty minutes.

What does this page cover?

It gives you a compact reference excerpt plus original lgStudy explanations, examples, applications and study material on Mummy brown.

Tags

  • Iron oxide pigments
  • Mummies
  • Pigments
  • Shades of brown

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