This library is built in the open.
If you spot an error, have a suggestion, or just want to say hello — we’d love to hear from you.

De Solido Intra Solidum Naturaliter Contento Dissertationis Prodromus
Nicolaus Steno turns the earth into a logical puzzle that anyone can solve through observation. You will discover how the rocks beneath your feet record a history of ancient seas, rising mountains, and the slow crystallization of the world.