For the longest time, researchers have claimed that the tongue delivers chemicals to the snake’s vomeronasal organ, also known as Jacobson’s organ, by threading its tips through two holes in the roof of a snake’s mouth. This is a myth. X-ray movies show that they do nothing of the sort, and the tongue simply nestles into the roof of the mouth. But to Schwenk’s eternal annoyance, the misconception still persists and abounds in textbooks.
