Title: Experiments with plants
Identifier: cu31924000616866 (find matches)
Year: 1905 (1900s)
Authors: Osterhout, Winthrop John Van Leuven, 1871-
Subjects: Botany
Publisher: New York, The Macmillan company; London, Macmillan & co. , ltd.
Contributing Library: Cornell University Library
Digitizing Sponsor: MSN

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220 EXPEBiMJSNTS ^I'flT PLANTS ^JJ^^F** What are the most perfect leaf- JBB^T^ mosaics you can find ? Notice the difference between the arrangement of leaves on hori- zontal and vertical shoots of the same plants (see Figs. 128, 129 and 130). Which arrangement re- quires the greatest bending and twisting of the leaves out of their original position? In what part of the leaf is the mechanism located by which these bending and twisting movements are accomplished? Study espe- cially in this respect the leaves of the Scarlet Runner or other bean, and examine the cushion- like swelling at the base of the stalk of each leaf and leaflet. Inasmuch as a tree forms its branches and leaAPs with reference to the light, prevail- ing winds, etc., it follows that when it is transplanted its orientation should not be changed, i. e., the same side should be toward the north both before and after planting. 129. Appearance of the Study both trees and shrubs (the branch shown m rig. Ti 1, n\j T 1-J5 when viewed from smaller plants as well), to discover above.
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128. Upright branch of Peri winkle (Vinca).

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