Roset's Optical Illusion

In 18 20 Peter Roset published a paper on the voluntary actions of the iris. He suspected that his claim to be able to manipulate the iris might be met with questions, and he was clear that he could prove his work if challenged. Not long after he got married, peter wrote about the optical illusion that became his most well known work in that area. The couple eventually had two children, a daughter named catherine mary, who went by kate,. They also had a son, john lewis, born in 18 28.