EMANUEL SWEDENBORG
to transport, and he tried in vain to buy paper sheets to be mounted at home. Characteristically he learned to engrave on copper and drew and engraved the plates for a pair of globes. At the same time he learned from his landlord to make brass instruments, and could when at home mount the globes. Of his studies he says—
"With regard to astronomy I have made such progress in it as to have discovered much which I think will be useful in its study. Although in the beginning it made my brain ache, yet long speculations are now no longer difficult for me. I searched closely for all propositions for finding the terrestrial longitude, but could not find a single one; I have therefore originated a method by means of the moon, which is unerring, and I am certain that it is the best which has yet been advanced. In a short time I will inform the Royal Society that I have a proposition to make on this subject, stating my points, If it is favorably received by these gentlemen, I shall publish it here; if not, in France. I have also discovered many new methods for observing the planets, the moon, and the stars; that which concerns the moon and its parallaxes, diameter, and inequality,
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