Cum haec sint tam magnis doctrinarum iucunditatibus animadversa et cogamur naturaliter inventionibus singularum rerum considerantes effectus moveri, multas res attendens admiror etiam Democriti de rerum natura volumina et eius commentarium, mentarium, quo scribitur cheirotometon; in quo etiam utebatur anulo signaturam optice est expertus.
These theorems are apprehended with the great pleasure which such methods can give. For we are compelled, when we consider the effects of individual causes, to feel a natural emotion in the presence of inventions. After a wide survey, I admire especially Democritus treatises on the Nature of Things, and in them the commentary in which there is figured the cutting of gems. With the help of optics, he investigated the impression of the seal in the ring which he used.
final_alignments\Vitruvius_Architecture_Book_9.json