Dodge, Mary Mapes, 1830-1905 · [New York : Scribner & Co.] · leaf 486
THE LINES as THEY APPEAR AFTER THELAPSE OF SEVERAL HOURS. diameter and fairly deep, and place it on thefloor of some quiet room. It is important that thefloor be entirely free from vibration, and thatthe bowl shall stand absolutely undisturbed for 1914] NATURE AND SCIENCE FOR YOUNG FOLKS 943 •^P^ … THE ANCIENT CYPRESS-TREE AT SANTA MARIA DEL TULE, MEXICO. several hours. Sprinkle over the surface of thewater a thin layer of fine resin or lycopodium.Some other powder will answer, only it must bea substance which will not dissolve in water afterhours of contact. Now draw upon this surface…
Children's literature
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