. Foundations of Botany. Botany. LEAVES 135 he can hardly fail to notice that there is a general relation between the plan of venation and the shape of the leaf. How may this relation be stated? In most cases the principal veins follow at the outset a pretty straight course, a fact for which the student ought to be able to give a reason after he has performed Exp. XXXII. On the whole, the arrangement of the veins seems to be such as to stiff- en the leaf most in the parts that need. Please note that these images are extracted from scanned page images that may have been digitally enhanced for r
. Foundations of Botany. Botany. LEAVES 135 he can hardly fail to notice that there is a general relation between the plan of venation and the shape of the leaf. How may this relation be stated? In most cases the principal veins follow at the outset a pretty straight course, a fact for which the student ought to be able to give a reason after he has performed Exp. XXXII. On the whole, the arrangement of the veins seems to be such as to stiff- en the leaf most in the parts that need. 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. Boston, Ginn & company
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Keywords: ., bookcentury1900, bookdecade1900, booksubjectbotany, bookyear1901
