wichita.edu
…rei, sive lapidibus sive metallis duritiem inducat. Cuius rei veritatem vel ipse Philosophus agnovit, qui ioco supra allegato ubi duplicem halitum exposuisset, tandem infert, res omnes calido agente, et frigido temperante calorem constare. Concreta itaque corpora, sive lapides sint, sive metalla, non solo frigore concrescere, dicendum est, sed…
https://www.wichita.edu/academics/fairmount_las/geology/wparcell/Kircher/Mundus/Vol2Bk10.php