maritime

Dejima Zu

Dejima, or Deshima, was a small fan-shaped artificial island in the bay of Nagasaki, Japan. During the Edo period (1615-1868), Dejima was the only place in which foreign traders were allowed to conduct business with Japan. It was originally built for Portuguese traders but was later used by the Dutch East India Company. In 1858, when Japan concluded the Treaty of Kanagawa with the United States, Dejima’s role as the only port of entry for the West was over. The island was expanded by reclaiming land, and it was merged into Nagasaki, thus obscuring the island’s original borders.

Opuscula Iuventutis Mathematica Curiosa...

The first part of this work describes a newly invented instrument of the era: a planisphere illustrated with a plate. A planisphere is a star chart analog computing instrument in the form of two adjustable disks that rotate on a common pivot. It can be adjusted to display the visible stars for any time and date. It is an instrument to assist in learning how to recognize stars and constellations. The astrolabe, an instrument that has its origins in the Hellenistic civilization, is a predecessor of the modern planisphere.

A Treatise on Diamonds and Precious Stones

John Mawe (1766-1829) first set out on a career at sea, but after the merchant ship he was in foundered on a reef near Mozambique, he concluded that a sea-faring life was too hazardous and turned to selling the shells, minerals, and other natural-history specimens that he had begun collecting in his travels. He became one of the leading dealers in the booming trade of specimens for curiosity cabinets and scholarly collections throughout Europe.