. Nature and development of plants . Fig. 3. Forms of leaves: A, leaf of white birch with netted veins—p, petiole; b, blade. B. leaf of Solomons seal with parallel venation andblade clasping stem without petiole. leaves bring the plant into harmony with its surroundings andgive to it a subtle individuality owing to the perfection of theirarrangements, structures and forms for the work in hand. The 7 8 THE \VRK !• THE LEAF more important work performed by the leaves is the construction of foods, the giving off of water or transpiration, and breathingor respiration. The magnitude of this work fa
. Nature and development of plants . Fig. 3. Forms of leaves: A, leaf of white birch with netted veins—p, petiole; b, blade. B. leaf of Solomons seal with parallel venation andblade clasping stem without petiole. leaves bring the plant into harmony with its surroundings andgive to it a subtle individuality owing to the perfection of theirarrangements, structures and forms for the work in hand. The 7 8 THE \VRK !• THE LEAF more important work performed by the leaves is the construction of foods, the giving off of water or transpiration, and breathingor respiration. The magnitude of this work far exceeds theenergy expended in all the industries of the world. The leave-,however, accomplish this work so quietly and economically thatmost people are scarcely conscious of it. In order to understand why the leaf has a petiole and greenblade (Fig. 3) or why it assumes various forms and arrangementsit will be necessary to examine the structure of the leaf and seethe character of the apparatus that is used in
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Keywords: ., bookcentury1900, bookdecade1900, bookpublisher, booksubjectplants
