Hereynia Curiosa, cap. v. The same account is given in Behren's Natural History of the Harz Forest, of which an English translation was published in 1730.
See also Muncke, Handbuch der Naturlehre, iii. 277; Heidelberg, 1830.
See page 58. The more modern spelling is frais-puits.
liv. 292.
Described by Schaller, Leitmeritzer Kreis, p. 271, and by Sommer, in the same publication, p. 331. I have not been able to procure this book.