• Title : Carte des Declinaisons et inclinaisons de l\'Aiguille Aimantee redigee d apres la table des observations Magnetiques faites par les Voyageurs depuis l Annee 1775
• Size: 24in x 24in (520mm x 520mm)
• Condition: (A+) Fine Condition
• Date : 1775
• Ref #:  32192

Description:
This large original copper plate engraved antique NW Pacific - from the Bering Straits to China & The Philippines - by Jean-François de Galaup, Comte de la Pérouse was engraved in 1775 and published in Count de Buffons monumental publication Histoire Naturelle

General Definitions:
Paper thickness and quality: - Heavy and stable
Paper color : - off white
Age of map color: -
Colors used: -
General color appearance: -
Paper size: - 24in x 24in (520mm x 520mm)
Plate size: - 24in x 24in (520mm x 520mm)
Margins: - Min 1/2in (12mm)

Imperfections:
Margins: - None
Plate area: - Folds as issued, light toning along folds
Verso: - None

Background: 
This map is one of 8 charts which records the first detailed & documented the earths magnetism. Compiled from the reports of La Perouse last voyage in the Pacific.
An uncommon chart designed to display magnetic variation in the Pacific, published in Count de Buffons Histoire Naturelle, in the mineralogy volumes. As this section was not as popular as the bird volumes it is believed that only 250 copies of this edition were printed.