A critic of claims of the paranormal will sometimes insinuate that claims of paranormal activity are not made by very careful and respectable observers such as scientists. Any such claim is not at all historically accurate. In my three part series When World Class Scientists Saw Ghosts (here, here, and here), I discuss how some great or famous scientists provided abundant written testimony in favor of the paranormal, including mysterious apparitions, ESP and levitations. Abundant evidence for the paranormal was also provided by twentieth century professors such as Joseph Rhine.
Let us look at some cases of chemistry professors who abundantly documented the paranormal. One such professor was William Gregory (1803-1858), a professor of chemistry at the University of Edinburgh (founded in 1582, and the sixth oldest English university). Gregory (the author of a conventional chemisty textbook) was the author of the long book Letters to a Candid Inquirer, on Animal Magnetism, which you can read online here. The book is a very fascinating work on hypnosis (the title uses a term for hypnosis which went out of vogue shortly after the book was published, being replaced by the word hypnosis).
Most of the second half of the 384-page book is a discussion of paranormal effects observed under hypnosis, mainly clairvoyance. Gregory provides very many fascinating accounts of clairvoyance that he personally observed in hypnotized subjects. The reality of clairvoyance under hypnosis had been affirmed by a prestigious French academic committee decades earlier, a five-year committe of the Royal Academy of Medicine.