Codex Leicester

(Redirected from Codex Hammer) Compiled famous scientific writings by Leonardo Da Vinci For the Greek minuscule manuscript of the New Testament also known as Codex Leicester, see Minuscule 69.

Codex Leicester
Codex Hammer
Page of the Codex Leicester
Author	Leonardo da Vinci
Language	Italian
Genre	Handwriting
Published	1510 (1504–1508)
Publication place	Florence, Italy
Pages	72 (18 sheets)

The Codex Leicester (also briefly known as the Codex Hammer) is a collection of scientific writings by Leonardo da Vinci. The codex is named after Thomas Coke, Earl of Leicester, who purchased it in 1717. The codex provides an insight into the mind of the Renaissance artist, scientist and thinker, as well as an exceptional illustration of the link between art and science and the creativity of the scientific process.

When the manuscript was last sold to Bill Gates at Christie's auction house on 11 November 1994 in New York for US$30,802,500 (equivalent to $63 million in 2023), it was the most expensive manuscript ever sold.

Manuscript

The leather-bound notebook comprises 36 sheets, 29 × 22 cm. The manuscript is not a single linear script but a mixture of Leonardo's observations and theories on astronomy and the properties of water, rocks, fossils, air, and celestial light. The topics addressed include:

An explanation of why fossils of sea creatures can be found on mountains. Hundreds of years before plate tectonics became accepted scientific theory, Leonardo believed that mountains had previously formed sea beds, which were gradually lifted until they formed mountains.
The movement of water. This is the main topic of the Codex Leicester. Among other things, Leonardo wrote about the flow of water in rivers and how it is affected by different obstacles put in its way. He made recommendations about bridge construction and erosion from his observations.
The luminosity of the Moon. Leonardo speculated that the Moon's surface is covered by water, reflecting the Sun's light. In this model, waves on the water's surface cause the light to be reflected in many directions, explaining why the Moon is not as bright as the Sun. Leonardo explained that the pale glow on the dark portion of the crescent Moon is caused by sunlight reflected from the Earth. Thus, he described the phenomenon of planetshine one hundred years before the German astronomer Johannes Kepler proved it.

The codex consists of 18 sheets of paper, each folded in half and written on both sides, forming the complete 72-page document. At one time the sheets were bound together, but they are now displayed separately. It was handwritten in Italian by Leonardo, using his characteristic mirror writing, and supported by copious drawings and diagrams.

History

Historical owners

Guglielmo della Porta, Michelangelo's student (?)
Giuseppe Ghezzi (until 1719)
Thomas Coke, 1st Earl of Leicester (1719–1759)
Leicester estate (1759–1980)

Codex Hammer

The codex was purchased at auction from the Leicester estate in 1980 by the wealthy industrialist and art collector Armand Hammer, for $5.1 million (equivalent to $19 million in 2023); he later renamed the notebook the Codex Hammer. Hammer commissioned Leonardo da Vinci scholar Carlo Pedretti to compile the loose pages of the codex back into its original form. Over the next seven years, Pedretti translated each page to English, completing the project in 1987.

Bill Gates

The codex was sold to Bill Gates by Christie's auction house on 11 November 1994 in New York for US$30,802,500. Until 2021, the codex remained the most expensive book ever sold.

After Gates acquired the codex, he had its pages scanned into digital image files, some of which were later distributed as screensaver and wallpaper files on a CD-ROM as part of a Microsoft Plus! for Windows 95 desktop theme, which would later be included with Windows 98 and Windows ME. A comprehensive CD-ROM version (titled Leonardo da Vinci) was released by Corbis in 1997.

The Codex Leicester has been unbound, with each page individually mounted between glass panes. It is on public display once a year in a different city worldwide. In 2000, it was displayed at Sydney's Powerhouse Museum. In 2004, it was exhibited in the Château de Chambord, and 2005 in Tokyo. One page was exhibited at the Seattle Museum of Flight's 2006 exhibit Leonardo da Vinci: Man, Inventor, Genius. From June to August 2007, the codex was the centerpiece of a two-month exhibition hosted by the Chester Beatty Library in Dublin. The codex was on view at the Phoenix Art Museum in Phoenix, Arizona, from 24 January 2015 to 12 April 2015 for the exhibition Leonardo Da Vinci's Codex Leicester and the Power of Observation. Its presentation at the Phoenix Art Museum was the first time a work by Leonardo was displayed in Arizona. The codex was then on view at the Minneapolis Institute of Arts in an exhibition Leonardo Da Vinci, the Codex Leicester, and the Creative Mind that opened 21 June 2015, where it remained on display until 30 August 2015. As part of the same tour, the Codex Leicester was also on display at the North Carolina Museum of Art in Raleigh, North Carolina from 31 October 2015 to 17 January 2016.

For the 500th anniversary of da Vinci's death, the Codex Leicester was on display from 29 October 2018 to 20 January 2019 in Florence at the Aula Magliabechiana of the Uffizi.

References

Leonardo (da Vinci), Kenneth David Keele, Jane Roberts, Leonardo Da Vinci: Anatomical Drawings from the Royal Library, Windsor Castle, New York: Metropolitan Museum of Art, 1983
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^ "Christie, Manson and Woods, sale 8030, 11 November 1994". Christies.com. 11 November 1994. Retrieved 23 July 2013.
Kuruvilla, Carol (22 September 2017). "Mormon Church Drops $35 Million On Printer's Manuscript Of The Book Of Mormon". Huffington Post. Retrieved 25 September 2017.
^ "An introduction to Leonardo da Vinci's Codices Arundel and Leicester" (PDF). Archived from the original (PDF) on 11 October 2017. Retrieved 11 February 2017.
"The Most Expensive Antique Items Ever Sold: Part II". 2 August 2018. Retrieved 30 September 2021.
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Christopher Reynolds and Hugh Hart (15 January 2007). "The Da Vinci codex versus the museum code". LA Times. Retrieved 27 March 2013.
Pedretti, Carlo (introduction); Roberts, Jane (catalogue) (1981). Leonardo da Vinci: the Codex Hammer: formerly the Codex Leicester. Los Angeles: Armand Hammer Foundation. ISBN 0384205909.
"Rare first printing of US Constitution sells for record $43M". AP News. 19 November 2021. Retrieved 19 July 2023.
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"Phoenix Art Museum – Exhibition Exhibitions". Archived from the original on 30 September 2019. Retrieved 26 January 2015.
"Leonardo da Vinci, the Codex Leicester, and the Creative Mind — Minneapolis Institute of Art – Minneapolis Institute of Art". Minneapolis Institute of Art.
"Leonardo da Vinci's Codex Leicester and the Creative Mind – Exhibitions – NCMA – North Carolina Museum of Art". 11 March 2021.
"Presented to the press the Codex Leicester by Leonardo da Vinci on view at the Uffizi". Le Gallerie Degli Uffizi. Retrieved 18 September 2020.

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