File:Luther Burbank- his methods and discoveries and their practical application. Prepared from his original field notes covering more than 100,000 experiments made during forty years devoted to plant (14598628007).jpg

Identifier: lutherburbankhis04burbuoft (find matches)
Title: Luther Burbank: his methods and discoveries and their practical application. Prepared from his original field notes covering more than 100,000 experiments made during forty years devoted to plant improvement, with the assistance of the Luther Burbank Society and its entire membership, under the editorial direction of John Whitson and Robert John and Henry Smith Williams
Year: 1914 (1910s)
Authors: Burbank, Luther, 1849-1926 John, Robert Whitson, John Williams, Henry Smith, 1863-1943 Luther Burbank Society
Subjects: Plant-breeding
Publisher: New York Luther Burbank Press
Contributing Library: Gerstein - University of Toronto
Digitizing Sponsor: University of Toronto

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^ in response to questions raised by ProfessordeVries, give a clew to the entire subject of the riseof sap in the tree. According to Vant Hofifs theory, osmosis or thepassage of water through a membrane from aweaker to a stronger solution, is due to the pres-sure of the molecules in the stronger solutionwhich, in virtue of their greater numbers, beatagainst the cell wall and exert a pressure exactlycomparable to the pressure of a gas. The push ofthe molecules against the cell wall suffices tosqueeze water through the wall until there is anequalization of pressure on both sides. As the protoplasm in the cells of the rootlets ofa plant is more concentrated than the watery so-lutions in the soil about it, osmotic action isestablished, which results in the cells taking up a (284)
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