A unillustrated pocket guide, issued in duodecimo format on "admiranda" or wonders of nature organized in ten categories (heaven, earth, and topics relating to meteors, fossils or minerals, plants, birds, quadrupeds, insects and bloodless animals, fish, and humans). The work draws heavily from classical sources such as Aristotle, Pliny, and Seneca, but also from the more recent work of Aldrovandi, and the section on plants includes descriptions of the flora and fauna of the New World, as well as tobacco. Each section is headed by an index to its contents. Jonston, born in Scotland, was raised and educated in Poland, and spent most of his life on the Continent of Europe. Digital facsimile from Google Books at this link.