In 1908, Dr. Walter Kilner invented aura goggles involving screens of dicyanin dye by which he could perceive the ultra-violet part of the field around the body that he termed "The Human Atmosphere" in a book of that title he published in 1911.
Readers, please enjoy this guest blog post by Alice Markham-Cantor, author of the new Once & Future Witch Hunt.
My 9x-great-grandmother, Martha Carrier, was hanged in the Salem witch trials. She wasn't a witch. She wasn't an herbalist or a...