The famous scientist Georges-Louis Leclerc, Comte de Buffon lived here in this castle. Comte de Buffon had many peculiar and impressive theories. One of the questions he asked was how long it took the once molten Earth to coll to its modern temperature. To work it out, he heated iron balls of different sizes and measured how long it took them to cool enough to touch. It is said he asked women to help him because their hands were more sensitive. He came to an estimate ranging from 75,000 to 3 million years.
Source: NewScientist, 8 October 2016, p. 40 & Wikipedia