Why Some Civil War Soldiers Glowed in the Dark

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.

The Other Gettysburg Address You Probably Haven't Heard Of

Image Composite: Edward Everett (Wikimedia Commons), Background (Wikimedia Commons)
Image Composite: Edward Everett (Wikimedia Commons), Background (Wikimedia Commons)

The greatest speech in American history had a tough act to follow.

On November 19, 1863, Abraham Lincoln delivered an address at the dedication of a new National Cemetery in Gettysburg, Pennsylvania. As the president offered some brief remarks before a war-weary crowd of around 15,000 people, he modestly said, “the world will little note, nor long remember what we say here.”

Lincoln was only half right about that. Despite his humble prediction, the president's Gettysburg Address has shown remarkable staying power over the past 155 years. The unifying oration has been engraved onto monuments, memorized by countless schoolchildren, and painstakingly dissected by every Civil War historian under the sun. It has even achieved international fame: Across the Atlantic, language from the speech was woven into the current constitution of France.

But at that gathering in Gettysburg, President Lincoln wasn’t the primary speaker. His immortal words were merely the follow-up to another speech—one that was meticulously researched and, at least by some accounts, brilliantly delivered. It was a professional triumph for a scholar and statesman named Edward Everett who had been hailed as the finest orator in America. Yet history has all but forgotten it.

DISTINGUISHED IN ACADEMIA—AND POLITICS

Everett was born in Massachusetts on April 11, 1794, and he was exceptional even as a young man. The son of a minister, Everett was admitted to Harvard University at 13 and graduated at 17. After studying to be a minister himself, and briefly serving as one, Everett's alma mater offered him a spot on its faculty. The position allowed time abroad in Europe, and Everett spent some of those years studying at the University of Göttingen in modern Germany, where he became the first American to earn a Ph.D. (U.S. schools didn’t offer that type of degree at the time). When he returned from Europe, Everett took up his post at Harvard.

For many people, landing a spot on Harvard’s payroll would be the achievement of a lifetime. But after Everett started teaching in 1819, he quickly found himself longing for a career change. In 1825, he ran for a seat in the U.S. House of Representatives. Elected as a conservative Whig, he served for a full decade before setting his sights on state politics. In 1835, Everett won the first of four one-year terms as the governor of Massachusetts. As governor, he revolutionized New England schools by spearheading the establishment of his state’s first board of education.

Like most politicians, Everett suffered his fair share of defeats. Due largely to his support of a controversial measure that limited alcohol sales, he was voted out of the governor’s mansion in 1839 (he lost by just one vote). But he soon got another shot at public service: In 1841, the John Tyler administration appointed Everett as the U.S. ambassador to Great Britain, a job that enabled him to play a major role in settling a Maine-New Brunswick border dispute that had created a great deal of tension between the two countries.

Academia beckoned once again in 1846, when Everett—after some coaxing—agreed to become the president of Harvard. Following his resignation in 1849, President Millard Fillmore appointed him Secretary of State. Everett subsequently bolstered his political resume with a one-year tenure in the U.S. Senate, resigning in 1854 after failing health caused him to miss a vote on the Kansas-Nebraska Act.

In the election of 1860, Everett found himself pitted against future president Abraham Lincoln. Without Everett's consent, the Constitutional Union Party—which favored ignoring the slavery issue to prevent a civil war—nominated him as its vice presidential candidate. The ex-Governor reluctantly accepted the nomination, believing that doing otherwise would cause too much damage to the ticket—but he flatly refused to campaign. Privately, he believed that the party had no chance, writing to a friend that June that his nomination was “of no great consequence; a mere ripple on the great wave of affairs.”

“A VOICE OF SUCH RICH TONES, SUCH PRECISE AND PERFECT UTTERANCE”

Something that was of great consequence, however, was Everett’s growing reputation as a first-rate public speaker. He'd taught Ralph Waldo Emerson at Harvard; in the budding philosopher’s words, Everett had “a voice of such rich tones, such precise and perfect utterance, that, although slightly nasal, it was the most mellow and beautiful, and correct of all the instruments of the time.” Everett's other celebrity fans included Thomas Jefferson, who praised a speech that Everett gave at Harvard on behalf of the visiting Marquis de Lafayette.

The American people grew well-acquainted with Everett’s oratory skills after he left the Senate. Once the war broke out, he started touring the northern states, making pro-Union speeches wherever he went. So when a Pennsylvania-led commission finished assembling a burial ground for the soldiers who’d fallen at Gettysburg, they naturally asked Edward Everett if he’d speak at the cemetery’s formal dedication in October 1863.

Everett received their official invite on September 23. His response was an enthusiastic yes, although he did request that the consecration date be pushed back to November 19 so he’d have time to research and gather his thoughts. The request was granted, and Everett got to work.

He began by going over every available account of the battle. From Union general George G. Meade’s staff, Everett received an official report on what had transpired. And when Robert E. Lee submitted his own account to the Richmond Inquirer, Everett went through it with a fine-toothed comb.

By November 11, Everett’s speech had begun to take shape. As a courtesy, he submitted an advance copy to another man who’d been asked to say a few words at Gettysburg: President Lincoln. The plan all along was for Everett to deliver a lengthy oration which would be followed by what one pamphlet described as “a few dedicatory remarks by the President of the United States.” Nobody expected the Commander-in-Chief to turn many heads with his brief comments. It was to be Everett’s show; Lincoln was an afterthought.

Everett traveled to Gettysburg on November 16, still constantly revising his notes. Since a large chunk of his speech would be dedicated to recounting the historic battle, he decided to familiarize himself with the terrain on which it was fought. Professor Michael Jacobs of Gettysburg College, an eyewitness to the battle, guided Everett through the hills and fields that surround the Pennsylvania town. Dead horses and soldiers still lay rotting where they’d fallen that summer. The whole town was polluted with their stench.

Lincoln arrived one night before he was to deliver his speech; both the president and Mr. Everett were given lodging at the home of event organizer David Wills. The next morning, the honored guests made their way towards the cemetery.

THE OTHER GETTYSBURG ADDRESS

The dedication began with some music, followed by a prayer that Reverend Thomas H. Stockton, a prominent anti-slavery cleric, delivered with trademark zeal. And then, Everett—his speech memorized in full—took the stage. Because the New Englander had weak kidneys, a tent had been placed behind the podium so that he might take a break and relieve himself during the speech if necessary.

“Standing beneath this serene sky,” he began, “overlooking these broad fields now reposing from the labors of the waning year, the mighty Alleghenies dimly towering before us, the graves of our brethren beneath our feet, it is with hesitation that I raise my poor voice to break the eloquent silence of God and nature.”

From there, Everett drew parallels between the cemetery’s consecration at Gettysburg and the reverence with which the ancient Athenians buried their fallen soldiers. His speech was loaded with historical references: As the address unfolded, Everett mentioned everything from the War of Roses to the fall of ancient Rome. He also quoted such great thinkers as Pericles and David Hume. He provided a detailed, point-by-point retelling of the battle at Gettysburg, denouncing the Confederacy, condemning the continued practice of slavery, and urging the north to strengthen its resolve. Still, Everett held firm to the belief that reconciliation between the two sides might still be possible. “There is no bitterness on the part of the masses,” he proclaimed. “The bonds that unite us as one people … are of perennial force and energy, while the causes of alienation are imaginary, factitious, and transient. The heart of the people, north and south, is for the Union.”

When Everett’s address came to a close, he had spoken more than 13,000 words over the course of two hours. B.B. French, a musician who’d penned a hymn for the occasion, later wrote, “Mr. Everett was listened to with breathless silence by all that immense crowd, and he had his audience in tears many times during his masterly effort.” The Philadelphia Age offered a more lukewarm review, stating “He gave us plenty of words, but no heart.” President Lincoln, however, loved the speech. In Everett’s diary, the orator remarks that when he stepped down, the president shook his hand “with great fervor and said, ‘I am more than gratified, I am grateful to you.’”

Those who remained in the audience were then treated to French’s hymn, as performed by the Baltimore Glee Club. And then, the president rose. Within three minutes, his speech of around 270 words (there’s some debate over its exact phrasing) was over and done with. According to one witness, “The extreme brevity of the address together with its abrupt close had so astonished the hearers that they stood transfixed. Had not Lincoln turned and moved towards his chair, the audience would very likely have remained voiceless for several moments more. Finally, there came applause.”

Everett knew a good speech when he heard one. One day after the consecration, he wrote to the president and asked for a copy of the little address. “I should be glad,” Everett wrote, “if I could flatter myself that I came as near to the central idea of the occasion in two hours as you did in two minutes.” James Speed, Attorney General from 1864 to 1866, would later recall that Lincoln treasured Everett’s kind words and said “he had never received a compliment he prized more highly.”

Lincoln was more than happy to offer up a copy of the speech—and to return the kind sentiments. “In our respective parts … you could not have been excused to make a short address, nor I a long one,” Lincoln told Everett. “I am pleased to know that, in your judgment, the little I did say was not entirely a failure.

“Of course,” he added, “I knew Mr. Everett would not fail.”

Guess the Famous Person Who Was Afraid of Being Buried Alive

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