6th-Century Writing Discovered Inside Medieval Bookbinding

NU-ACCESS
NU-ACCESS

By fusing two imaging techniques, researchers at Northwestern University have illuminated ancient Roman texts that had been hidden inside the binding of another book since the 1500s.

From the 1400s up until the 1700s, it was common for book binders to recycle parchment to create new books, leaving behind fragments of text from the original book hidden within the bindings. While researchers are aware that these hidden texts exist, they cannot be viewed without destroying part of the books.

The book at hand, a 1537 copy of Works and Days by the Greek poet Hesiod, has been at Northwestern since 1870. The book still contains its original binding, and researchers studying it noticed still-visible writing on the book board that the book binder had clearly tried to wash or scrape away. The board was covered with a parchment cover, but the ink had degraded the parchment over the years, so that the writing began to peek through.

Views of the text being imaged and the results of each type of imaging
Courtesy Emeline Pouyet

They sent the book to Cornell University to be examined by a powerful, high-intensity x-ray called the Cornell High Energy Synchrotron Source, or CHESS. The x-ray revealed text that a historian identified as a piece of the 6th-century Roman legal code Institutes of Justinian, with notes and analysis written along the margins.

However, the researchers hoped to create a way to image similar books without sending them to another institution for analysis. Other scholars might not have the resources to send their books off for study, and some books are too delicate for travel, anyway. They wanted to find an in-house way to come up with similar results.

They began by using two different imaging techniques. One, using macro x-ray fluorescence, is sensitive to the metal in the ink, so it provides good contrast in an image—but it also has poor resolution and is a slow process. The other, using hyperspectral imaging in the visible range, is faster and offers good spatial resolution, but lacks contrast. "Using these two techniques alone, we could not read the text," study co-author Emeline Pouyet tells Mental Floss.

That's when they used a machine-learning algorithm to discover that by "fusing the data" from the techniques, they could create an image of the text that was nearly as readable as the one produced at Cornell. That means "we can use these instruments on site and analyze similar collections using this approach," says Pouyet.

The authors published their results in the August edition of the journal Analytica Chimica Acta.

The technique could yield many more finds within the recycled bindings of medieval books. "We've developed the techniques now where we can go into a museum collection and look at many more of these recycled manuscripts and reveal the writing hidden inside of them," explains co-author Marc Walton, of the Northwestern University-Art Institute of Chicago Center for Scientific Studies, in a university press release.

5 Fast Facts About Billy the Kid

On September 23, 1875, Billy the Kid was arrested for the first time. Whether you think he was a misunderstood old West hero or nothing but a cold-blooded killer, it's impossible to argue that he was an interesting man. Here are five facts to prove it.

1. HIS "REAL" NAME IS A TOPIC OF DEBATE.

Billy the Kid's real name? Henry McCarty. Or maybe William Bonney. Or Henry Antrim. Take your pick. He was born Henry McCarty, but there's some speculation that his dad may have been a man named William Bonney. Billy the Kid started using his name at some point in 1877. Antrim was his step-father's last name; he went by that for some time as well.

2. HE WORKED AT A CHEESE FACTORY.

Billy the Kid wasn't always engaging in illegal activities and shooting people; he once worked at a cheese factory—at least he did according to Charlie Bowdre, a man who would later be in Billy's posse, and was part owner of the cheese factory. Bowdre's descendants have said this is where the two of them met, although his employ was short.

3. HIS LEGEND MAY BE A BIT OF AN EXAGGERATION.

You may have heard the legend that Billy killed 21 people—one for each year of his rather short life. It's just that: legend. We only have evidence that Billy killed four people, two of them prison guards. He may have "participated" in the deaths of up to five more people.

4. CONTRARY TO POPULAR BELIEF, HE PROBABLY WASN'T LEFT-HANDED.

The reason this notion became widespread is because of the famous ferrotype of him that shows him wearing a gun belt with the holster on the left side. It was later discovered that the image has been reproduced incorrectly and flipped to show the mirror image of what really was. The picture actually shows Billy with his gun on his right hip.

5. SOME PEOPLE BELIEVE HE FAKED HIS OWN DEATH.

Many people—including some claiming to be Billy himself—have said Billy didn't actually die on July 14, 1881 in Fort Sumner, New Mexico, which is the official story. Many claim that Sheriff Pat Garrett didn't kill Billy, but actually helped him fake his death and happily ride off into the sunset. No evidence has ever been found to support this, though.

Men claiming to be Billy include Ollie "Brushy Bill" Roberts and a man named John Miller. Brushy Bill started claiming to be Billy the Kid in 1949, and knew quite a few intimate details about Billy's life and the Lincoln Country War. But there were several gunfights he was pretty clueless about, and photo comparisons using sophisticated computer programs show the men to have completely different bone structure and other features.

As for John Miller, his claims were basically put to rest in 2005 when his bones were disinterred and DNA samples were taken. They were compared to a blood sample thought to be Billy the Kid's and there was no match.

10 Electrifying Facts About Michael Faraday

iStock
iStock

This world-changing genius was born into poverty on September 22, 1791. Fortunately for us, Michael Faraday refused to let his background stand in his way.

1. HE WAS LARGELY SELF-EDUCATED.

In Faraday's boyhood home, money was always tight. His father, James, was a sickly blacksmith who struggled to support a wife and four children in one of London's poorer outskirts. At age 13, young Faraday started helping the family make ends meet. Bookseller George Ribeau (sometimes spelled Riebau) took him on as an errand boy in 1804, with the teen's primary job being the delivery and recovery of loaned-out newspapers.

Shortly after Faraday's 14th birthday, Ribeau offered him a free apprenticeship. Over the next seven years, he mastered the trade of bookbinding. After hours, Faraday remained in Ribeau's store, hungrily reading many of the same volumes he'd bound together.

Like most lower-class boys, Faraday's formal schooling was very limited. Between those bookshelves, however, he taught himself a great deal—especially about chemistry, physics, and a mysterious force called "electricity."

2. A 300-PAGE NOTEBOOK LAUNCHED HIS SCIENTIFIC CAREER.


Wikimedia Commons // CC BY 4.0 

Sir Humphry Davy (above) left a huge mark on science. In the year 1808 alone, the man discovered no less than five elements, including calcium and boron. An excellent public speaker, Davy's lectures at the Royal Institution consistently drew huge crowds. 

Twenty-year-old Faraday attended four of these presentations in 1812, having received tickets from a customer. As Davy spoke, Faraday jotted down detailed notes, which he then compiled and bound into a little book. Faraday sent his 300-page transcript to Davy. Duly impressed, the seasoned scientist eventually hired him as a lab assistant. Later in life, Davy was asked to name the greatest discovery he'd ever made. His answer: "Michael Faraday."

Tension would nevertheless erupt between mentor and protégé. As Faraday's accomplishments began to eclipse his own, Davy accused the younger man of plagiarizing another scientist's work (this rumor was swiftly discredited) and tried to block his admission to the Royal Society.

3. IF IT WEREN'T FOR FARADAY, WE MIGHT NOT HAVE ELECTRIC POWER.

On September 3, 1821, Faraday built a device that ushered technology into the modern era. One year earlier, Danish physicist Hans Christian Ørsted had demonstrated that when an electric current flows through a wire, a magnetic field is created around it. Faraday capitalized on this revelation. Inside the Royal Society basement, he began what was arguably his most groundbreaking experiment by placing a magnet in the bottom of a mercury-filled glass container. Dangling overhead was a wire, which Faraday connected to a battery. Once an electric current was conducted through the wire, it began rotating around the magnet.

Faraday had just built the world's first electric motor. How could he possibly top himself? By building the world's first electric generator. His first experiment was comprised of a simple ring of wires and cotton through which he passed a magnet. By doing so, he found that a current was generated. To this day, most electricity is made using the same principles.

4. FARADAY INVENTED THE RUBBER BALLOON.


iStock

By today's standards, his early models would look shabby. Made via pressing two sheets of rubber together, Faraday's balloons were used to contain hydrogen during his experiments. Faraday created his first in 1824 and was quick to praise the bag's “considerable ascending power.” Toy manufacturers started distributing these the following year.

5. HE'S ALSO THE GRANDFATHER OF MODERN REFRIGERATORS.

In 1823, Faraday sealed a sample of chlorine hydrate inside a V-shaped tube. As he heated one end and cooled the other simultaneously, the scientist noticed that a peculiar yellow liquid was starting to form. Curious, he broke open the tube. Without warning, a sudden, violent explosion sent glass shards flying everywhere. Mercifully uninjured, he smelled a strong scent of chlorine in the air.

It didn't take him very long to figure out what had happened. Inside the tube, pressure was building, which liquefied the gas. Upon puncturing the glass, he'd released this pressure and, afterwards, the liquid reverted into its gaseous state. This sudden evaporation came with an interesting side-effect: it cooled down the surrounding air. Quite unintentionally, Faraday thus set the stage for the very first ice-making machines and refrigeration units.

6. HE BECAME AN ANTI-POLLUTION CRUSADER.

Britain's industrialization came at a malodorous price. As London grew more crowded during the mid-1800s, garbage and fecal matter were dumped into the River Thames with increasing regularity. Naturally, the area didn't smell like a rose. In 1855, Faraday penned an oft-reproduced open letter about the problem, imploring the authorities to take action. “If we neglect this subject,” he wrote, “we cannot expect to do so with impunity; nor ought we be surprised if, ere many years are over, a hot season give us sad proof for the folly of our carelessness.”

Just as Faraday predicted, a broiling summer forced Londoners of all stripes to hold their noses. Dubbed “the Great Stink,” the warmer months of 1858 sent the Thames' rancid odor wafting all over the city. Parliament hastily responded with a comprehensive sewage reform bill. Gradually, the putrid stench began to dissipate.

7. HE STARTED THE ROYAL SOCIETY'S CHRISTMAS LECTURE TRADITION.


Alexander Blaikley, Wikimedia Commons, Public Domain

Faraday understood the importance of making science accessible to the public. In 1825, while employed by the Royal Society, he spearheaded an annual series that's still going strong today. That holiday season, engineer John Millington delivered a set of layman-friendly lectures on “natural philosophy.” Every year thereafter (excluding 1939–1942 because of WWII), a prominent scientist has been invited to follow in his footsteps. Well-known Christmas lecturers include David Attenborough (1973), Carl Sagan (1977), and Richard Dawkins (1991). Faraday himself was the presenter on no less than 19 occasions.

8. BRILLIANT AS FARADAY WAS, HE STRUGGLED WITH MATH.

Towards the end of his life, Faraday's lack of formal education finally caught up with him. An underprivileged childhood had rendered him mathematically illiterate, a severe handicap for a professional scientist. In 1846, he hypothesized that light itself is an electromagnetic phenomenon, but because Faraday couldn't support the notion with mathematics, it wasn't taken seriously. Salvation for him came in the form of a young physicist named James Clerk Maxwell. Familial wealth had enabled Maxwell to pursue math and—in 1864—he released equations [PDF] that helped prove Faraday's hunch.

9. AS TIME WORE ON, HE STRUGGLED WITH MEMORY LOSS.

Michael Faraday
iStock

At the age of 48, Faraday's once-sharp memory started faltering. Stricken by an illness that rendered him unable to work for three years, he wrestled with vertigo, unsteadiness, and other symptoms. Following this "extended vacation" [PDF], he returned to the Royal Society, where he experimented away until his early 70s.

However, Faraday was still prone to inexplicable spurts of sudden giddiness, depression, and extreme forgetfulness. “[My] bad memory,” he wrote, “both loses recent things and sometimes suggests old ones as new.” Nobody knows what caused this affliction, though some blame it on overexposure to mercury.

10. EINSTEIN KEPT A PORTRAIT OF FARADAY IN HIS BERLIN HOME.

Fittingly, the father of modern physics regarded Faraday as a personal hero. Once, upon receiving a book about him, Einstein remarked, “This man loved mysterious Nature as a lover loves his distant beloved.”

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