82 PLANT CELLS 



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Chambers, R. and T. Kerr. Intracellular hydrion concentration studies. 

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Frey-Wyssling, A. Der Aufbau der pflanzlichen Zellwdnde. Protoplasma 

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Gortner, R. A. The role of ivater in the structure and properties of proto- 

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Kerr, T., and L W. Bailey. Structure, optical properties and chemical com- 

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349. 1934- 

 Kraemer, E. O. and W. D. Lansing. The molecular weights of cellulose and 



cellulose derivatives. Jour. Phys. Chem. 39: 153-168. 1935. 

 Lepeschkin, W. W. Uber die chemische Zusammensetzung des Protoplasmas 



des Plasmodiums. Ber. Deutsch. Bot. Ges. 41 : 179-187. 1923. 

 Lewis, F. T. The shape of tracheids in the pine. Amer. Jour. Bot. 22: 741- 



762. 1935- 



Livingston, L. G. The nature and distribution of plasmodesmata in the to- 

 bacco plant. Amer. Jour. Bot. 22: 75-87- 1935- 



Meyer, M. Die submikroskopische Struktur der kutinisierten Zellmembra- 

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Naylor, E. E. The hydrogen-ion concentration and the staining of sections of 

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Norman, A. G. The association of xylan with cellulose in certain structural 

 celluloses. Biochem. Jour. 30: 2054-2072. 1936. 



Randolph, L. F. Cytology of chlorophyll types of maize. Bot. Gaz. 73 : 337- 



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Smith, E. P., and A. J. Quirk. A begonia immune to crowngall: with obser- 

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Stamm, A. J. The state of dispersion of cellulose in cuprammonium sol- 

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V/eier, E. The structure of the chloroplast. Bot. Rev. 4: 497-530. 1938. 



Zirkle, C. The plant vacuole. Bot. Rev. 3 : 1-30. 1937. 



