In 1924, Germany was rocked by a sensational case of multiple homicide.
However, as the investigation unfolded, doubts began to emerge regarding Angerstein’s account.
There were also many contradictions in his statements.
Angerstein was arrested and charged with murder which he denied.
When Angerstein heard about the incriminating photographs, he threw in the towel and confessed to the crime.
Kuhne found that alum worked best.
From this position the rabbit could see only a gray and clouded sky.
Then the animal was exposed for three minutes to the light.
The center image is the optogram obtained after exposing the rabbit to light.
The window the rabbit was facing is acting like discernible in the image.
The rightmost image is another optogram where 3 large side-by-side windows is shown.
It does not resemble anything that the victim could have seen at the time of his death.
Others suggest they could be the steps to the gallows.
Kuhnes drawing of an optogram obtained from an executed criminal in 1880.
Vernois killed no less than seventeen animals and dissected their eyes, but in vain.
Over the next hundred years the idea would recur frequently in literature and media.
Nevertheless, he definitively concluded that optography held no potential as a forensic tool.
This marked the final instance of serious scientific research into optography.
