Did William Henry Harrison Really Die of Pneumonia?

James Lambdin, The White House Historical Association, Public Domain, Wikimedia Commons
James Lambdin, The White House Historical Association, Public Domain, Wikimedia Commons

Whether you learned it in school, or through a jaunty musical number on The Simpsons, the sad tale of William Henry Harrison is one of the more unique in American history. Before being elected the ninth President of the United States in 1840, Harrison was known as a military hero who led his troops to victory against an attack from the Native American confederacy in 1811, later known as the Battle of Tippecanoe. His heroics extended into the War of 1812, when he recovered Detroit from the British and won the Battle of Thames.

Military notoriety has often given way to a road into politics, especially in the 19th century. Harrison was soon elected a senator for Ohio, and then eventually became president after beating incumbent president Martin van Buren in 1840. At 67 years old, Harrison took office as the oldest president to ever be elected—a record that would stand until Ronald Reagan's election in 1980 at 69 years old. Despite the cold, rainy weather in Washington D.C. on inauguration day, Harrison stood in front of the masses without his overcoat, hat, and gloves, and gave an 8445-word speech that would last almost two hours. Three weeks later, Harrison complained of fatigue and of a cold, which later turned into what doctors called pneumonia. On April 4, 1841—exactly one month after taking office—Harrison was dead.

The historical narrative virtually wrote itself: Harrison, after being improperly dressed for the weather, got pneumonia and would go down as a cautionary tale (or a punch line) and as having the shortest presidency on record. But was it really pneumonia that killed him? Harrison's own doctor, Thomas Miller, was skeptical. He wrote:

“The disease was not viewed as a case of pure pneumonia; but as this was the most palpable affection, the term pneumonia afforded a succinct and intelligible answer to the innumerable questions as to the nature of the attack.”

While revisiting the case a few years ago, writer Jane McHugh and Dr. Philip A. Mackowiak of the University of Maryland School of Medicine came up with a new diagnosis after looking at the evidence through the lens of modern medicine: enteric fever, also known as typhoid fever. They detailed their findings in the journal Clinical Infectious Diseases [PDF] and for The New York Times.

Before 1850, Washington D.C.'s sewage was dumped in a marsh just seven blocks upstream from the executive mansion's water supply. McHugh and Mackowiak hypothesize that Harrison was exposed to bacteria—namely Salmonella typhi or S. paratyphi—which could cause enteric fever. Harrison also apparently had a history of severe indigestion, which could have made him more susceptible to such intestinal distress. While treating Harrison, Miller also administered opium and enemas, both of which would cause more harm than good to someone in Harrison's condition.

Harrison would not have been the only person to be afflicted with a gastrointestinal illness while occupying the presidency in this time period. Both James K. Polk and Zachary Taylor, according to McHugh and Mackowiak, suffered through severe gastroenteritis, and the duo theorizes it was the same enteric fever as Harrison's. Polk recovered, while Taylor died in office of his illness, less than 10 years after Harrison's death.

Though Harrison's insistence on soldiering through his lengthy, bitterly cold inauguration while dressed in his finest spring wear wasn't a high point in presidential common sense, there's plenty of scientific evidence to suggest that it didn't contribute to the shortest presidency in American history.

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Why Do Dogs Eat Grass?

iStock/K_Thalhofer
iStock/K_Thalhofer

If something is edible (or even if it's not), many dogs will gladly make a meal of it. But if you see your pet grazing on your front lawn like cattle, it may be driven by something more than its undiscerning appetite. Eating grass frantically can be a sign that a dog is sick.

It's not unusual to see a dog vomit after consuming grass, prompting some pet owners to wonder if their dog ate the grass to soothe its own upset stomach or if the grass is what caused its symptoms in the first place. According Dr. Jerry Klein, chief veterinary officer for the American Kennel Club, this behavior is sometimes a response to symptoms that were already present. "When dogs go outside and gobble grass really quickly, there's usually a reason, an instinctual behavior to try to induce some kind of gastrointestinal reaction," he tells Mental Floss. "When they realize they're nauseous or something else, the only thing they know how to do is to force themselves to vomit. Some dogs that eat grass chomp it down without really chewing it, and often times may vomit something up and that's how they treat themselves."

Despite it being a common issue for pet owners, little research has been done into why dogs eat grass. It's likely that stomach problems only explain this behavior part of the time. In other situations, a dog may eat grass for the same reason it eats your shoes or the groceries you left on the kitchen counter: Because it's hungry, anxious, or bored.

So how can you tell when your dog is munching grass for pleasure and when it's trying to induce itself to vomit? Pay attention to the way it eats. Dogs are omnivorous, meaning they eat both plants and animals, so just eating grass alone normally won't be enough to make it sick. But if a dog is gorging on grass faster than it can chew it, that may be an indication that something is wrong. Whole blades of grass can irritate a dog's throat and stomach lining, potentially causing them to throw up if they swallow a lot of them in a short amount of time.

No matter the reason for your dog's grass-eating habits, Klein says that they aren't a major issue. The behavior shouldn't be encouraged, as grass in public places can potentially carry harmful chemicals like pesticides, so stop your dog if you see it grazing. But if it shows no signs of illness or discomfort afterward, there's no need to rush it to the vet. "If I see a dog eating grass, I'm not going to panic. I would try to stop it and then monitor it to see how it acts in the next 15 to 20 minutes. Look at how the dog's acting, its body shape and movement, and the feeling you get from the dog."

One condition related to vomiting that would warrant a trip to the vet is something called bloat. This happens when a dog's stomach fills with air, causing it to retch without actually throwing anything up. This is a medical emergency and can be deadly if left untreated.

A dog who vomits after eating grass and looks happy afterward, on the other hand, is probably not a cause for concern—though you may argue otherwise when you're steam-cleaning your carpet.

Have you got a Big Question you'd like us to answer? If so, send it to bigquestions@mentalfloss.com.

How Do Airplanes Land in Water?

iStock/oblong1
iStock/oblong1

Joe Shelton:

At least in terms of the physical act of landing, seaplanes and floatplanes land on the water pretty much in the same way that land based airplanes land on the ground.

They start with an appropriate approach airspeed, a slight flaring just before touching down, feeling it as the aircraft touches the water, and then it's slightly different. Because of the water's drag the aircraft will slow very quickly and settle into the water. Brakes aren't really needed. And that's good because they don't have any brakes that work in the water.

Once in the water they are as controllable as a boat. Which is to say, not that much. In fact, in the water they are navigated pretty much just like a boat.

Most if not all seaplanes and floatplanes have "water rudders" that allow them to steer in the water just like a boat. But as they approach a pier or beach you'll usually see the engine stopped and the pilot out on the float or leaning out of the aircraft with an oar rowing the boat to shore (sounds like a Peter, Paul, and Mary lyric).

If the question wonders why the aircraft don't sink, it's because they are designed to float.

Floatplanes are typically normal aircraft that have been outfitted with floats, usually two, one under each wing. Seaplanes, on the other hand, are designed specifically for water operations.

Many or even most floatplanes and seaplanes are what's called amphibious. That means that they can land and take off from both water and land. Typically they have retractable/extendable wheels (landing gear).

While it's important that an aircraft's landing gear has been extended when landing on the ground, it's equally important, if not more so, that the landing gear is retracted when landing on water.

Here's why:

The aircraft in the video is a "floatplane" with aftermarket floats.

a firefighting seaplane
iStock/Paolo Seimandi

This is a seaplane where the fuselage is designed to float like a boat. It also has floats, but they are part of the design.

a Piper Apache floatplane
Phil Hollenback, Flickr // CC BY-NC 2.0

This is a Piper Apache on floats. It's also the aircraft that I earned my Commercial Multiengine Seaplane rating in.

This post originally appeared on Quora. Click here to view.

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