NOTES.--Star a in Taurus is red, has eight metals; moves east (page 227). At o above tip of right horn is the Crab Nebula (page 219). In Orion, a is variable, has five metals; recedes 22 miles per second. b, d, e, x, r, etc., are double stars, the component parts of various colors and magnitudes (page 212, note). l and i are triple; s, octuple; th, multiple, surrounded by a fine Nebula (page 218).] All sciences are making an advance, but Astronomy is moving at the double-quick. Since the principles of this science were settled by Copernicus, four hundred years ago, it has never had to beat a retreat. It is rewritten not to correct material errors, but to incorporate new discoveries.…
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