At Auschwitz, Mengele did a number of twin studies. After the experiment was over, these twins were usually murdered and their bodies dissected. He supervised an operation by which two Gypsy children were sewn together to create conjoined twins; the hands of the children became badly infected where the veins had been resected. Mengele was almost fanatical about drawing blood from twins, mostly identical twins. He is reported to have bled some to death this way
Auschwitz prisoner Alex Dekel has said: "I have never accepted the fact that Mengele himself believed he was doing serious work — not from the slipshod way he went about it. He was only exercising his power. Mengele ran a butcher shop — major surgeries were performed without anesthesia. Once, I witnessed a stomach operation — Mengele was removing pieces from the stomach, but without any anesthetic. Another time, it was a heart that was removed, again, without anesthesia. It was horrifying. Mengele was a doctor who became mad because of the power he was given. Nobody ever questioned him — why did this one die? Why did that one perish? The patients did not count. He professed to do what he did in the name of science, but it was a madness on his part".
After studying theology, philosophy and alchemy, he created an animal oil made of bones, blood and various other animal products, known as Dippel's Oil which was supposed to be the equivalent to the alchemists' dream of the "elixir of life." It is said that some of his work on anatomy involved boiling various body parts in large vats to make some kind of mad man stew, and that he also tried his hand at moving the soul from one corpse to another, possibly with a funnel, a hose and a lot of lubricant.
In front of an audience, he conducted an experiment on a hung murderer, George Forster. He applied conducting rods to the man's rectum, whereby the dean man began to punch the air, and his legs began to kick and flinch. Rods applied to the face made it clench and quiver. The left eye popped open. Several people present feared the man had come back to life, and had he actually sprung forth, he would have to be re-executed. One individual was so horrified, that shortly upon leaving the spectacle, he reportedly died.
Ure had reported that had Forster's blood not been drained, or his neck broken from the hanging, he was sure he could bring him back to life. The 3rd experiment showed the extraordinary facial expressions exhibited when Ure made an incision in Forster's forehead. The rod was inserted, and Forster's face began to show emotions of anger, horror, despair, anguish, and hideous, contorted smiles. The expressions scared viewers so badly, that one doctor who was known to have a strong stomach, passed out on the spot. The final experiment had people believing that Forster was indeed alive. A cut was made into the forefinger. Once the rod was inserted, Forster began to raise his hand and point to people in the audience. Needless to say, many were horrified.
Some of the numerous atrocities committed by Ishii and others under his command in Unit 731 include: vivisection of living people (including pregnant women who were impregnated by the doctors), prisoners had limbs amputated and reattached to other parts of their body, some prisoners had parts of their bodies frozen and thawed to study the resulting untreated gangrene. Humans were also used as living test cases for grenades and flame throwers. Prisoners were injected with inoculations of disease, disguised as vaccinations, to study their effects. To study the effects of untreated venereal diseases, male and female prisoners were deliberately infected with syphilis and gonorrhea via rape, then studied. Having been granted immunity by the American Occupation Authorities at the end of the war, Ishii never spent any time in jail for his crimes and died at the age of 67 of throat cancer.
On 1998, a simple RFID transmitter was implanted beneath Warwick's skin, and used to control doors, lights, heaters, and other computer-controlled devices based on his proximity. The main purpose of this experiment was said to be to test the limits of what the body would accept, and how easy it would be to receive a meaningful signal from the chip.
On 2002, a more complex neural interface was implanted on his nervous system, getting access to his nervous signals. The experiment proved so successful, that the signal produced was detailed enough for a robot arm to mimic the actions of Warwick's own arm.
Later, a highly publicised extension to the experiment, in which a simpler array was implanted into Warwick's wife—with the aim of creating a form of telepathy or empathy using the Internet to communicate the signal from afar—was also successful, resulting in the first purely electronic communication experiment between the nervous systems of two humans. His experiments are still on.
Lilly later gave up scientific research and founded the firm Samadhi Tanks, which manufactured tanks for domestic use. On 1980 Lilly's work was the model for the film "Altered States". Having became something of a New Age guru, he died in 2001.