Signalman Jack: The Baboon Who Worked for the Railroad—and Never Made a Mistake

Wikimedia Commons // Public Domain
Wikimedia Commons // Public Domain

One day in the 1880s, a peg-legged railway signalman named James Edwin Wide was visiting a buzzing South African market when he witnessed something surreal: A chacma baboon driving an oxcart. Impressed by the primate’s skills, Wide bought him, named him Jack, and made him his pet and personal assistant.

Wide needed the help. Years earlier, he had lost both his legs in a work accident, which made his half-mile commute to the train station extremely difficult for him. So the first thing he trained the primate to do was push him to and from work in a small trolley. Soon, Jack was also helping with household chores, sweeping floors and taking out the trash.

But the signal box is where Jack truly shined. As trains approached the rail switches at the Uitenhage train station, they’d toot their whistle a specific number of times to alert the signalman which tracks to change. By watching his owner, Jack picked up the pattern and started tugging on the levers himself.

Soon, Wide was able to kick back and relax as his furry helper did all of the work switching the rails. According to The Railway Signal, Wide “trained the baboon to such perfection that he was able to sit in his cabin stuffing birds, etc., while the animal, which was chained up outside, pulled all the levers and points.”

As the story goes, one day a posh train passenger staring out the window saw that a baboon, and not a human, was manning the gears and complained to railway authorities. Rather than fire Wide, the railway managers decided to resolve the complaint by testing the baboon’s abilities. They came away astounded.

“Jack knows the signal whistle as well as I do, also every one of the levers,” wrote railway superintendent George B. Howe, who visited the baboon sometime around 1890. “It was very touching to see his fondness for his master. As I drew near they were both sitting on the trolley. The baboon’s arms round his master’s neck, the other stroking Wide’s face.”

Jack was reportedly given an official employment number, and was paid 20 cents a day and half a bottle of beer weekly. Jack passed away in 1890, after developing tuberculosis. He worked the rails for nine years without ever making a mistake—evidence that perfectionism may be more than just a human condition.

No Venom, No Problem: This Spider Uses a Slingshot to Catch Prey

Courtesy of Sarah Han
Courtesy of Sarah Han

There are thousands of ways nature can kill, and spider species often come up with the most creative methods of execution. Hyptiotes cavatus, otherwise known as the triangle weaver spider, is one such example. Lacking venom, the spider manages to weaponize its silk, using it to hurl itself forward like a terrifying slingshot to trap its prey.

This unusual method was studied up close for a recent paper published in the Proceedings of the National Academy of Sciences by researchers at the University of Akron in Ohio. They say it's the only known instance of an animal using an external device—its web—for power amplification.

Hyptiotes cavatus's technique is simple. After constructing a web, the spider takes one of the main strands and breaks it in half, pulling it taut by moving backwards. Then, it anchors itself to a spot with more webbing in the rear. When the spider releases that webbing, it surges forward, propelled by the sudden release of stored energy. In the slingshot analogy, the webbing is the strap and the spider is the projectile.

This jerking motion causes the web to oscillate, tangling the spider's prey further in silk. The spider can repeat this until the web has completely immobilized its prey, a low-risk entrapment that doesn’t require the spider to get too close and risk injury from larger victims.

The triangle weaver spider doesn’t have venom, and it needs to be proactive in attacking and stifling prey. Once a potential meal lands in its web, it’s able to clear distances much more quickly using this slingshot technique than if it crawled over. In the lab, scientists clocked the spider’s acceleration at 2535 feet per second squared.

Spiders are notoriously nimble and devious. Cebrennus rechenbergi, or the flic-flac spider, can do cartwheels to spin out of danger; Myrmarachne resemble ants and even wiggle their front legs like ant antennae. It helps them avoid predators, but if they see a meal, they’ll drop the act and pounce. With H. cavatus, it now appears they’re learning to use tools, too.

[h/t Live Science]

Plano, Texas Is Home to a Dog-Friendly Movie Theater That Serves Bottomless Wine or Whiskey

K9 Cinemas
K9 Cinemas

For dog owners in Plano, Texas, movie night with Fido no longer just means cuddling on the couch and browsing Netflix. The recently opened K9 Cinemas invites moviegoers—both human and canine—to watch classic films on the big screen. And the best part for the human members of this couple? Your $15 ticket includes bottomless wine or whiskey (or soft drinks if you're under 21).

The theater operates as a pop-up (or perhaps pup-up?) in a private event space near Custer Road and 15th Street in Plano. Snacks—both the pet and people kind—are available for $2 apiece. Dogs are limited to two per person, and just 25 human seats are sold per showing to leave room for the furry guests.

Pet owners are asked follow a few rules in order to take advantage of what the theater has to offer. Dogs must be up-to-date on all their shots, and owners can submit veterinary records online or bring a hard copy to the theater to verify their pooch's health status. Once inside, owners are responsible for taking their dog out for potty breaks and cleaning up after any accidents that happen (thankfully the floors are concrete and easy to wipe down).

While many of the movies shown are canine-themed—a recent screening of A Dog's Journey included branded bandanas with every ticket purchase—they also hold special events, like a Game of Thrones finale watch party (no word on how the puppers in attendance responded to Jon Snow finally acknowledging what a good boy Ghost is).

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