Dodge, Mary Mapes, 1830-1905 · [New York : Scribner & Co.] · leaf 375
A SMALL SECTION OF THE GLASS SCREEN,GREATLY MAGNIFIED. If, however, the picture to be printed is notmade up of lines, but of gradations of light and 846 NATURE AND SCIENCE FOR YOUNG FOLKS [July, shade, as in a photograph, a wash-drawing, or anoil-painting, then the whole picture, in being… … A LINE-ENGRAVING OF A BIRD.The Blackburnian warbler. like under a strong microscope, appear muchthose of a checker-board. These microscopic squares are made by pho
Children's literature
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