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Virginia, Marylandia et Carolina in America septentrionali Brittannorum industria excultæ

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Virginia, Marylandia et Carolina in America septentrionali Brittannorum industria excultæ

description

Summary

Also covers Delaware, southern Pennsylvania, New Jersey, western Long Island, southwestern Connecticut, and portions of adjacent areas.
Relief shown pictorially. Depths shown by soundings.
Title in Latin. Place names in Latin, English, and French.
"Cum privilegio sac. cæs. majest."
Prime meridian: Ferro.
Includes ill.
Gift; From the collection of Dr. Gerald D. Aurbach, given in his memory by his wife, Hannah, and daughters, Elissa and Pamela.
LC copy annotated in black ink to show statistical table at upper right.
LC copy discolored, creased, torn at edges, and clipped at lower right and left corners.
Available also through the Library of Congress Web site as a raster image.
Acquisitions control no. 94-28
Vault

In the 17th century, maps took a huge leap forward. Mathematical and astronomical knowledge necessary to make accurate measurements had evolved. English mathematicians had perfected triangulation: navigation and surveying by right-angled triangles. Triangulation allowed navigators to set accurate courses and produced accurate land surveys. Seamen learned to correct their compasses for declination and had determined the existence of annual compass variation. Latitude determination was greatly improved with the John Davis quadrant. The measurement of distance sailed at sea was improved by another English invention, the common log. Longitudinal distance between Europe and Québec was determined by solar and lunar eclipses by the Jesuit Bressani in the 1640s and by Jean Deshayes in 1686. With accurate surveys in Europe, the grid of the modern map began to take shape.

date_range

Date

01/01/1700
place

Location

Atlantic States
create

Source

Library of Congress
copyright

Copyright info

Public Domain

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