Dodge, Mary Mapes, 1830-1905 · [New York : Scribner & Co.] · leaf 47
of dogs andcattle; why should they differ? 25. Describe theegg of a crow and of a woodpecker. 26. Why issnow white but ice clear ? 27. Does air weigh any-thing ? Prove by experiment. 28. When sap istaken from trees, is it running up or down ? Whatmakes it run ? 29. Describe a feather. 30. De-scribe…
Children's literature
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