homehome Home chatchat Notifications


New Guinea warriors used human bone daggers -- and these are remarkably strong

The weapons were used in hand-to-hand combat or to kill prisoners.

Tibi Puiu
April 25, 2018 @ 5:45 pm

share Share

For centuries, New Guinea natives have crafted bone knives and daggers used for hunting, fighting, and for ceremony. Most are made from the thighbones of cassowaries, which are large, ostrich-like birds. However, some of the daggers are made from human bone — specifically, the thighbone of an ancestor or highly respected member of the tribe — and these are remarkably resilient. In fact, some scientists actually measured the strength of human bone daggers and compared them to the cassowary variety, finding the former is almost twice as strong.

A handout picture released from researcher Nathaniel Dominy shows a human thigh bone dagger attributed to the Upper Sepik River (up) and cassowary bone dagger attributed to the Abelam people (down). Credit: Dartmouth College.

A handout picture released by researcher Nathaniel Dominy shows a human thigh bone dagger attributed to the Upper Sepik River (up) and cassowary bone dagger attributed to the Abelam people (down). Credit: Dartmouth College.

New Guinea tribes are no strangers to weird and peculiar traditions, to use a euphemism, at least to us westerners. Take the Edoro, for instance, an ethnic New Guinea tribe whose range comprises the southern slopes of Mt. Sisa, and who are famous to anthropologists for the ritual pedophilic homosexual acts they practice. The Etoro believe that young boys must ingest the semen of their elders daily from the age of 7 until they turn 17 to achieve adult male status and to properly mature and grow strong. What’s more, among the Etoro, heterosexual intercourse — which they believe makes men die early — is prohibited for up to 260 days of the year and forbidden in or near their houses and vegetable gardens. In contrast, homosexual relations — which the Etoro believe prolong life — are permitted at any time.

A more widespread practice among New Guinea tribes is crafting bone daggers. Nathaniel Dominy, a professor of anthropology at Dartmouth College, got the idea to investigate such weapons after he came across an impressive stash of daggers at the university’s Hood Museum of Art, which were carved out of cassowary and human thighbones. These were like exquisite works of art, featuring elaborate motifs carved into them.

Dominy claims that the daggers were used to kill or finish off victims wounded with arrows or spears, by stabbing them in the neck. There are also accounts from the 1800s and early 1900s that the bone daggers were used for mutilation and cannibalism, but such statements are difficult to verify. Dominy says that these old accounts made by outsiders, such as missionaries, are prone to exaggerations and cultural misinterpretations.

What’s certain, the researchers say, is that the manufacturing of the human bone dagger had a deep cultural significance. Typically, such a dagger was fashioned out of the thighbone of a very important person in the community, either the father of the warrior or some other respected person in the community. This way, the warrior carried the rights and power of the person from which the bone came.

“The human bone dagger is stronger because men gave it a slight different shape—it has greater curvature,” Dominy told AFP.

“We believe that such a shape was done deliberately to minimise the chance of the dagger breaking during fighting. And the reason that men engineered human bone daggers to resist breaking is because human bone daggers carried a lot of social prestige.”

Closeup of a terryfing cassowary claw -- the real life, modern-day Velociraptor. Credit: Featured Creature.

Closeup of a terrifying cassowary claw — the real life, modern-day Velociraptor. Credit: Featured Creature.

The most common type of New Guinea dagger, however, is made from the cassowary. Although it might look relatively harmless, don’t let its appearance deceive you — this is one of the most dangerous birds in the world. It’s the second heaviest in the world after its cousin, the ostrich, and each of its feet boasts a razor-sharp claw that can grow to 4.7 in. (12 cm) in length. With an agile kick, a predator can be easily maimed or killed. What’s more, the bird can jump almost 5 feet (1.5 m) high and can run up to 31 mph (50 km/h). So, it’s not very surprising that New Guinea locals used the cassowary’s claw to fashion daggers out of.

In order to see which of the types of daggers is stronger, the researchers performed computed tomography (CT) scans of five cassowary daggers and five human-bone daggers. The scans enabled the researchers to determine the density of each dagger. Apparently, both types of bones ‘are equally good for making daggers.’ However, when an additional cassowary-bone dagger — which was bought especially for this study — was destroyed in a bending test to see how much force it could take before breaking, the weapon proved far inferior to the human bone one. The test showed that the bird bone weapon could handle up to 44 lbs (200 newtons) of force before breaking, while the human bone dagger could withstand twice as much force. The researchers say that it’s likely that the human daggers are stronger because they crafted with greater care, seeing how they were a lot rarer and more valuable than the bird-bone daggers.

The findings were reported the journal Royal Society Open Science.

share Share

More Than Half of Intersection Crashes Involve Left Turns. Is It Time To Finally Ban Them?

Even though research supports the change, most cities have been slow to ban left turns at even the most congested intersections.

A London Dentist Just Cracked a Geometric Code in Leonardo’s Vitruvian Man

A hidden triangle in the vitruvian man could finally explain one of da Vinci's greatest works.

The Story Behind This Female Pharaoh's Broken Statues Is Way Weirder Than We Thought

New study reveals the ancient Egyptian's odd way of retiring a pharaoh.

China Resurrected an Abandoned Soviet 'Sea Monster' That's Part Airplane, Part Hovercraft

The Soviet Union's wildest aircraft just got a second life in China.

A Rocket Carried Cannabis Seeds and 166 Human Remains into Space But Their Capsule Never Made It Back

The spacecraft crashed into the Pacific Ocean after a parachute failure, ending a bold experiment in space biology and memorial spaceflight.

Ancient ‘Zombie’ Fungus Trapped in Amber Shows Mind Control Began in the Age of the Dinosaurs

The zombie fungus from the age of the dinosaurs.

Your browser lets websites track you even without cookies

Most users don't even know this type of surveillance exists.

What's Seasonal Body Image Dissatisfaction and How Not to Fall into Its Trap

This season doesn’t have to be about comparison or self-criticism.

Why a 20-Minute Nap Could Be Key to Unlocking 'Eureka!' Moments Like Salvador Dalí

A 20-minute nap can boost your chances of a creative breakthrough, according to new research.

The world's oldest boomerang is even older than we thought, but it's not Australian

The story of the boomerang goes back in time even more.