1720 Italian Navigation Manuscript w/ Temperature Maps

This is a page from a stunning 18th century manuscript treatise on navigation. The treatise, Introdusione alla sfera e alla Geografia Moderna, alas, is incomplete. Definitions of geographical terms critical to navigation and geography are detailed, including changes in climate based on latitude and longitude. Diagrams are included which depict the tropical, temperate, and arctic zones as well as other phenomena. All text is in Italian and is on both recto and verso. We have provided a date of 1720, but this is merely conjecture. Based upon the paper and style, it is reasonable to assume this was drawn between 1650 and 1790.