388 PLANT PHYSIOLOGY 



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Factors rendering the plasmolytic method inapplicable in the 



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of ligneous and herbaceous plants with respect to osmotic concentration 



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J. V. Lawrence, and A. T. Valentine. The 



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Utah. Jour. Agr. Res., 27: 893-924, 1924. 

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 Iljin, W. S. tJber die Austrocknungsfahigkeit des lebenden Protoplasmas 



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Proto plasma, 10 : 37^414, 1930. 

 JoFFE, J. S., and H. C. McLean. Suction force of soils: a note on the 



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Science, 62: 548-550, 1925. 

 KiEssELBACH, T. A. Varietal, cuUural, and seasonal effects upon the water 



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plants in autoirrigated soils, as related to the water-supplying power 



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