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PLEASURES OF THE TELESCOPE.
741
Another double that perhaps we had better not try with less than four inches aperture is 84 Virginis. The magnitudes are six and nine; distance, 3·5″, p. 233°. Colors, yellow and blue. ∑ 1846
Map No. 9
is a fifth-magnitude star with a tenth-magnitude companion, distance only 4″, p. 108°. Use the five-inch.
And now we approach something that is truly wonderful, the "Field of the Nebulæ." This strange region, lying mostly in the
