Johannis Gaubii epistola problematica, prima [-tertia]
A Latin scholarly letter by Johannes Gaubius, published in Amsterdam in 1696 by Johannes Wolters, likely addressed to fellow natural philosophers and physicians. Its pictures are copper-engraved and woodcut plates: a woodcut vase of flowers, an emblem with a wreath and a Latin motto, and an engraved plate of a lumpy fruit-like body with magnified surface textures and cross-hatched tonal swatches, useful for designers studying early scientific engraving and hatching.
![Picture 1 of 3 from Johannis Gaubii epistola problematica, prima [-tertia] (1696), leaf 5](https://img.insideoutlibrary.com/img/200/ia-b30768986-5-0.webp)
![Picture 2 of 3 from Johannis Gaubii epistola problematica, prima [-tertia] (1696), leaf 40](https://img.insideoutlibrary.com/img/200/ia-b30768986-40-0.webp)
![Picture 3 of 3 from Johannis Gaubii epistola problematica, prima [-tertia] (1696), leaf 42](https://img.insideoutlibrary.com/img/200/ia-b30768986-42-0.webp)