Magnetic map of the Earth, 1734.
2 2 c m
actual image size: 32cm x 14cm

Magnetic map of the Earth, 1734.

© Science Museum / Science & Society Picture Library


The caption on the map reads, in translation: 'Map of the whole Earth showing Magnetic declination, arranged for the year 1700 by Edmund Halley together with inclinations observed by Pound'. California is shown as a separate island. Illustration from 'Principia rerum naturalium' (The principia, or, The first principles of natural things) by Emanuel Swedenborg (1688-1772) published in Dresden in 1734.

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