In 1642, Mrs. Catharina Geisslerin was widely known as "the
toad-vomiting woman of Germany." She told people that she had
swallowed tadpoles in swamp water, and that frogs were thriving in
her intestinal tract. Whenever she drank milk, the frogs would hop
about madly. Despite initial skepticism, she convinced physicians
that amphibians were in her digestive system -- especially after
she vomited fully-grown frogs (sometimes living) for two years in
front of famous professors and medical consultants!
When Dr. Thomas Rheinesius, a great physician from Saxony, decided
to study Catharina's case, she seemed to stop vomiting frogs. He
wanted to examine her further, and for three months gave her
various foul solutions to encourage her to vomit and have diarrhea.
But no frogs came forth. Next, Professor Michaelis from Leipzig
came to give Catharina more powerful agents to encourage vomiting
-- which caused her to vomit a frog leg.
In 1648, after the physicians had left, Catharina began vomiting
amphibians with a passion -- and the famous Thomas Bartholin was
called in to study her. Bartholin, a student of the Dutch school of
anatomists, was no slouch. He taught at the University of
Copenhagen (1646-1661) and served as physician to King Christian V
(reference 1). As mentioned previously, Bartholin was the first
person to fully describe the entire human lymphatic system. If
anyone could solve the mystery of the frog-vomiting woman, he
could, or so people thought.
Bartholin started his research by cutting up one of Catharina's
frog children. He was shocked to find dozens of black flies inside
the stomach. How could this be if the frog had grown to maturity
within the woman's belly? Like St. André who did not consider
mature rabbit dung and floating lungs indicative of fraud,
Bartholin did not think the flies meant Catharina swallowed frogs
and vomited them in front of spectators a few minutes later.
When Catharina died in 1662, the medical community was excited
about dissecting her body to search for amphibians within her
stomach or intestines. To their dismay, the physicians found no
creatures. Catharina did not die by amphibian overcrowding but by
liver inflammation.
The scientists studying Catharina did not realize that the
stomach's digestive juices would quickly destroy amphibians. (The
warm temperature also contributes to their demise.)