. Elements of botany. Plants. STRUCTUPwE OF THE STEM. 55 Make a thin section of the stem of grapevine or elder a year or two old and study the pith with a power of 50 or 100 diameters. Sketch Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the original Bergen, Joseph Y. (Joseph Young), 1851-1917; Bergen, Joseph Y. (Joseph Young), 1851-1917. Bergen's Botany: key and flora, Pacific coast ed. Boston : Ginn

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Keywords: ., bookcentury1800, bookdecade1890, booksubjectplants, bookyear1896