I shall have to add Mr. Saltus to my company of authors with private systems of astronomy. The imagination robust enough to conceive a crescent moon in the east at nightfall might even claim a place in a dime museum. Spielhagan has his full moon on the horizon at midnight by the castle clock. But the novelists are not alone in their ignorance of what is before their eyes all their blessed lives: the poets know no more than they. In her _Songs of the Night-Watches_ Jean Ingelow compels “a slender moon” to “float up from behind” a person looking at the sunset sky, and afterward makes the full moon “behind some ruined roof swim up” at daybreak. To rout out the moon so early and make it get up, when it must have been up all night attending to its duty as a full moon of orderly habits, is a trifle heartless. In “Daylight and Moonlight,” Longfellow, who seems imperfectly to have known how the latter was produced, tells of a time when at midday he saw the moon Sailing high, but faint and white As a schoolboy’s paper kite. Now if it was sailing high at noon it must have been, as seen from earth, nearly on a line with the sun—that is to say, but little more than “new”—that is to say, invisible in the daytime. But that is not the worst of this business. A new moon is not only invisible at noon, but sets soon after sunset, and would give but little light if it did not. Yet this unearthly observer after relating how night came on adds: Then the moon, in all her pride, Like a spirit glorified, Filled and overflowed the night With revelations of her light. It is mournful to think that this popular poet lived out his long serene life without anybody suspecting his condition, nor offering him the comforts of an asylum. I have found similar blunders in the poems of Wordsworth, Coleridge, Schiller, Moore, Shelley, Tennyson and Bayard Taylor. Of course a poet is entitled to any kind of universe that may best suit his purpose, and if he could give us better poetry by making the moon rise “full-orbed” in the northwest and set like a “tin sickle” in the zenith I should go in for letting him have his fling. But I do not discern any gain in “sweetness and light” from these despotic readjustments of the relations among sun, earth and moon, and must set it all down to the account of ignorance, which, in any degree and however excusable, is not a thing to be admired. Concerning nothing is it more general, more deep, more dark, more invincible, nor withal, more needless, than it is with regard to movements and visible aspects of our satellite. How one can have eyes and not know the pranks of the several heavenly bodies is possibly obvious to Omniscience, but a finite mind cannot rightly understand it.