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Why Some Civil War Soldiers Glowed in the Dark

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By the spring of 1862, a year into the American Civil War, Major General Ulysses S. Grant had pushed deep into Confederate territory along the Tennessee River. In early April, he was camped at Pittsburg Landing, near Shiloh, Tennessee, waiting for Maj. Gen. Don Carlos Buell’s army to meet up with him.

On the morning of April 6, Confederate troops based out of nearby Corinth, Mississippi, launched a surprise offensive against Grant’s troops, hoping to defeat them before the second army arrived. Grant’s men, augmented by the first arrivals from the Ohio, managed to hold some ground, though, and establish a battle line anchored with artillery. Fighting continued until after dark, and by the next morning, the full force of the Ohio had arrived and the Union outnumbered the Confederates by more than 10,000.

The Union troops began forcing the Confederates back, and while a counterattack stopped their advance it did not break their line. Eventually, the Southern commanders realized they could not win and fell back to Corinth until another offensive in August (for a more detailed explanation of the battle, see this animated history).

All told, the fighting at the Battle of Shiloh left more than 16,000 soldiers wounded and more 3,000 dead, and neither federal or Confederate medics were prepared for the carnage.

The bullet and bayonet wounds were bad enough on their own, but soldiers of the era were also prone to infections. Wounds contaminated by shrapnel or dirt became warm, moist refuges for bacteria, which could feast on a buffet of damaged tissue. After months marching and eating field rations on the battlefront, many soldiers’ immune systems were weakened and couldn’t fight off infection on their own. Even the army doctors couldn’t do much; microorganisms weren’t well understood and the germ theory of disease and antibiotics were still a few years away. Many soldiers died from infections that modern medicine would be able to nip in the bud.

A Bright Spot

Some of the Shiloh soldiers sat in the mud for two rainy days and nights waiting for the medics to get around to them. As dusk fell the first night, some of them noticed something very strange: their wounds were glowing, casting a faint light into the darkness of the battlefield. Even stranger, when the troops were eventually moved to field hospitals, those whose wounds glowed had a better survival rate and had their wounds heal more quickly and cleanly than their unilluminated brothers-in-arms. The seemingly protective effect of the mysterious light earned it the nickname “Angel’s Glow.”

In 2001, almost one hundred and forty years after the battle, seventeen-year-old Bill Martin was visiting the Shiloh battlefield with his family. When he heard about the glowing wounds, he asked his mom - a microbiologist at the USDA Agricultural Research Service who had studied luminescent bacteria that lived in soil - about it.

“So you know, he comes home and, 'Mom, you're working with a glowing bacteria. Could that have caused the glowing wounds?’” Martin told Science Netlinks. “And so, being a scientist, of course I said, ‘Well, you can do an experiment to find out.’”

And that’s just what Bill did.

He and his friend, Jon Curtis, did some research on both the bacteria and the conditions during the Battle of Shiloh. They learned that Photorhabdus luminescens, the bacteria that Bill’s mom studied and the one he thought might have something to do with the glowing wounds, live in the guts of parasitic worms called nematodes, and the two share a strange lifecycle. Nematodes hunt down insect larvae in the soil or on plant surfaces, burrow into their bodies, and take up residence in their blood vessels. There, they puke up the P. luminescens bacteria living inside them. Upon their release, the bacteria, which are bioluminescent and glow a soft blue, begin producing a number of chemicals that kill the insect host and suppress and kill all the other microorganisms already inside it. This leaves P. luminescens and their nematode partner to feed, grow and multiply without interruptions.

As the worms and the bacteria eat and eat and the insect corpse is more or less hollowed out, the nematode eats the bacteria. This isn’t a double cross, but part of the move to greener pastures. The bacteria re-colonize the nematode’s guts so they can hitch a ride as it bursts forth from the corpse in search of a new host.

The next meal shouldn’t be hard to find either, since P. luminescens already sent them an invitation to the party. Just before they got got back in their nematode taxi, P. luminescens were at critical mass in the insect corpse, and scientists think that that many glowing bacteria attract other insects to the body and make the nematode’s transition to a new host much easier.

A Good Light

Looking at historical records of the battle, Bill and Jon figured out that the weather and soil conditions were right for both P. luminescens and their nematode partners. Their lab experiments with the bacteria, however, showed that they couldn’t live at human body temperature, making the soldiers’ wounds an inhospitable environment. Then they realized what some country music fans already knew: Tennessee in the spring is green and cool. Nighttime temperatures in early April would have been low enough for the soldiers who were out there in the rain for two days to get hypothermia, lowering their body temperature and giving P. luminescens a good home.

Based on the evidence for P. luminescens’s presence at Shiloh and the reports of the strange glow, the boys concluded that the bacteria, along with the nematodes, got into the soldiers’ wounds from the soil. This not only turned their wounds into night lights, but may have saved their lives. The chemical cocktail that P. luminescens uses to clear out its competition probably helped kill off other pathogens that might have infected the soldiers’ wounds. Since neither P. luminescens nor its associated nematode species are very infectious to humans, they would have soon been cleaned out by the immune system themselves (which is not to say you should be self-medicating with bacteria; P. luminescens infections can occur, and can result in some nasty ulcers). The soldiers shouldn’t have been thanking the angels so much as the microorganisms.

As for Bill and Jon, their study earned them first place in team competition at the 2001 Intel International Science and Engineering Fair.

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Ramones Karaoke, Flickr // CC BY-NC 2.0
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Fake It Until You Make It: 10 Artificial Ruins
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Ramones Karaoke, Flickr // CC BY-NC 2.0

The love of ruins, sometimes called ruinophilia, has for centuries inspired the creation of clever fakes—a host of sham facades and hollowed-out castle shells found on grand English, European, and even American estates. The popularity of constructing artificial ruins was at its peak during the 18th and 19th centuries, but architects occasionally still incorporate them today.

Why build a structure that is already crumbling? Between the 16th and 19th centuries, the popularity of counterfeit ruins was influenced by two factors—a classical education that enforced the ideals of ancient Greece and Rome, and the extended tour of Europe (known as The Grand Tour) that well-to-do young men and women took after completing their education. Travelers might start in London or France and roam as far as the Middle East, but the trip almost always included Italy and a chance to admire Roman ruins. More than a few wealthy travelers returned home longing to duplicate those ruins, either to complement a romantic landscape, to demonstrate wealth, or to provide a pretense of family history for the newly rich.

Here are a few romantic ruins constructed between the 18th and 21st centuries.

1. SHAM CASTLE // BATHAMPTON, ENGLAND

Sham Castle (shown above) is aptly named—it’s only a façade. The "castle," overlooking the English city of Bath, was created in 1762 to improve the view for Ralph Allen, a local entrepreneur and philanthropist as well as to provide jobs for local stonemasons. From a distance it looks like a castle ruin, but it's merely a wall that has two three-story circular turrets and a two-story square tower at either end. The castle is not the only folly (as such purely decorative architecture is often called) that Allen built. He also constructed a sham bridge on Serpentine Lake in what is now Prior Park Landscape Garden—the bridge can't be crossed, but provides a nice focal point for the lake. Today, Sham Castle is part of a private golf course.

2. WIMPOLE FOLLY // CAMBRIDGESHIRE, ENGLAND

Building a structure that looks as if it's crumbling does not preclude having to perform regular maintenance. The four-story Gothic tower known as Wimpole Folly in Wimpole, Cambridgeshire, England, was built 1768-72 for Philip Yorke, first Earl of Hardwicke and owner of the Wimpole Estate. Owned by Britain’s National Trust, the ruin threatened to truly crumble a few years ago, so restoration efforts were needed. The last restoration was so well done it won the 2016 European Union Prize for Cultural Heritage. The Wimpole Estate is now open to the public for walks and hikes.

3. CAPEL MANOR FOLLY // ENFIELD, ENGLAND

Capel Manor at Bulls Cross, Enfield, England has been the site of several grand homes since the estate’s first recorded mention in the 13th century, so visitors might be tempted to believe that the manor house's ruins date back at least a few centuries. But that sense of history is an illusion: The faux 15th-century house was built in 2010 to add visual appeal to the manor gardens, which have been open to the public since the 1920s.

4. ROMAN RUIN // SCHONBRUNN PALACE, VIENNA, AUSTRIA

The Roman Ruin was built as a garden ornament for the 1441-room Schonbrunn Palace in Vienna, one of the most important monuments in Austria. The ruin was once called The Ruins of Carthage, after the ancient North African city defeated by Roman military force. But despite the illusion of antiquity, the ruins were created almost 2000 years after Carthage fell in 146 B.C.E. The ruin’s rectangular pool, framed by an intricate semi-circle arch, was designed in 1778 by the architect Johann Ferdinand Hetzendorf von Hohenberg, who modeled it on the Ancient Roman temple of Vespasian and Titus, which he had seen an engraving of.

5. THE RUINEBERG // POTSDAM, GERMANY

One of the earliest examples of artificial ruins in Germany was the complex of structures known as The Ruinenberg. Frederick the Great, King of Prussia, had a summer palace in Potsdam, near Berlin, that was said to rival Versailles. In 1748 Frederick commissioned a large fountain for the palace complete with artificial ruins. The waterworks part of his plan proved too difficult and was soon abandoned, but not before designer Georg Wenzeslaus von Knobelsdorff constructed the ruins. The complex includes Roman pillars, a round temple, and the wall of a Roman theatre. Since 1927 the site has belonged to the Prussian Gardens and Palaces Foundation, Berlin-Brandenburg.

6. PARC MONCEAU // PARIS, FRANCE

Elegant Parc Monceau is located in the fashionable 8th arrondissement of Paris near the Champs-Elysees and Palais de l’Elysée. In 1778, the Duke of Chartres decided to build a mansion on land previously used for hunting. He loved English architecture and gardens, including the notion of nostalgic ruins, so he hired the architect Louis Carrogis Carmontelle to create an extravagant park complete with a Roman temple, antique statues, a Chinese bridge, a farmhouse, a Dutch windmill, a minaret, a small Egyptian pyramid, and some fake gravestones. The most notable feature of the park is a pond surrounded by Corinthian columns, now known as Colonnade de Carmontelle.

7. HAGLEY PARK CASTLE // WORCESTERSHIRE, ENGLAND

The ruins of the medieval castle at Hagley Park in Worcestershire are definitely fake, but they were built with debris from the real ruin of a neighboring abbey. The folly was commissioned by Sir George Lyttelton in 1747 and designed by Sanderson Miller, an English pioneer of Gothic revival architecture. The castle has a round tower at each corner, but by design only one is complete and decorated inside with a coat of arms. The grounds, which also feature a temple portico inspired by an ancient Greek temple, some urns, and obelisks, are now privately owned and not open to the public.

8. TATA CASTLE RUINS // TATA, HUNGARY

French architect Charles de Moreau (1758-1841) was a scholar of classical Roman architecture known for his ability to counterfeit impressive ruins. Nicholas I, Prince Esterhazy of Hungary, hired him to work on Tata Castle and to create the ruins of a Romanesque church for the palace’s English Garden. Even though the ruin Moreau created was fake, he built it with the stones of a real ruin, the remnants of the early-12th-century Benedictine and later Dominican abbey of Vértesszőlős. A third-century ancient Roman tombstone and relief were placed nearby.

9. BELVEDERE CASTLE // MANHATTAN, NEW YORK

Frederick Law Olmsted and Calvert Vaux designed Central Park in the mid-1800s, and their plan for creating romantic vistas included the construction of a folly known as Belvedere Castle. The Gothic-Romanesque style hybrid, overlooking Central Park’s Great Lawn, was completed in 1869. Although the folly was designed as a hollow shell and meant to be a ruin, it eventually served a practical purpose, housing a weather bureau and exhibit space. The castle also provides a beautiful backdrop for Shakespeare in the Park productions, evoking the royal homes that play prominent roles in the Bard’s works.

10. FOLLY WALL IN BARKING TOWN SQUARE // LONDON

In a borough known for its real historic buildings, the ancient wall found in London’s Barking Town Square might look centuries old. It’s not, and ironically, the wall is part of the square’s renovation efforts. The wall was built by bricklaying students at Barking College using old bricks and crumbling stone items found at salvage yards. Known as the "Secret Garden," named after the children’s book about a walled garden, the wall was designed to screen a nearby supermarket and was unveiled in 2007.

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IA Collaborative
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Lovely Vintage Manuals Show How to Design for the Human Body
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IA Collaborative

If you're designing something for people to hold and use, you probably want to make sure that it will fit a normal human. You don't want to make a cell phone that people can't hold in their hands (mostly) or a vacuum that will have you throwing out your back every time you clean the house. Ergonomics isn't just for your office desk setup; it's for every product you physically touch.

In the mid-1970s, the office of legendary industrial designer Henry Dreyfuss created a series of manuals for designers working on products that involved the human body. And now, the rare Humanscale manuals from Henry Dreyfuss Associates are about to come back into print with the help of a Kickstarter campaign from a contemporary design firm. Using the work of original Henry Dreyfuss Associates designers Niels Diffrient and Alvin R. Tilley, the guides are getting another life with the help of the Chicago-based design consultancy IA Collaborative.

A Humanscale page illustrates human strength statistics.

The three Humanscale Manuals, published between 1974 and 1981 but long out-of-print, covered 18 different types of human-centric design categories, like typical body measurements, how people stand in public spaces, how hand and foot controls should work, and how to design for wheelchair users within legal requirements. In the mid-20th century, the ergonomics expertise of Dreyfuss and his partners was used in the development of landmark products like the modern telephones made by Bell Labs, the Polaroid camera, Honeywell's round thermostat, and the Hoover vacuum.

IA Collaborative is looking to reissue all three Humanscale manuals which you can currently only find in their printed form as historic documents in places like the Cooper Hewitt design museum in New York. IA Collaborative's Luke Westra and Nathan Ritter worked with some of the original designers to make the guides widely available again. Their goal was to reprint them at a reasonable price for designers. They're not exactly cheap, but the guides are more than just pretty decor for the office. The 60,000-data-point guides, IA Collaborative points out, "include metrics for every facet of human existence."

The manuals come in the form of booklets with wheels inside the page that you spin to reveal standards for different categories of people (strong, tall, short, able-bodied, men, women, children, etc.). There are three booklets, each with three double-sided pages, one for each category. For instance, Humanscale 1/2/3 covers body measurements, link measurements, seating guide, seat/table guide, wheelchair users, and the handicapped and elderly.

A product image of the pages from Humanscale Manual 1/2/3 stacked in a row.

"All products––from office chairs to medical devices—require designs that 'fit' the end user," according to Luke Westra, IA Collective's engineering director. "Finding the human factors data one needs to achieve these ‘fits' can be extremely challenging as it is often scattered across countless sources," he explains in a press release, "unless you've been lucky enough to get your hands on the Humanscale manuals."

Even setting aside the importance of the information they convey, the manuals are beautiful. Before infographics were all over the web, Henry Dreyfuss Associates were creating a huge compendium of visual data by hand. Whether you ever plan to design a desk chair or not, the manuals are worthy collectors' items.

The Kickstarter campaign runs from July 25 to August 24. The three booklets can be purchased individually ($79) or as a full set ($199).

All images courtesy IA Collaborative

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