400 LITERATURE 



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 Wyckoff, R. W. G., 1947b. (Globular virus, electron micrograph.) 6th. Int. Cong, of 



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 Wyckoff, R. W. G., 1947c. (Long-range forces.) Biochim. Biophys. Acta 2. 139. 

 Wyckoff, R. W. G., 1949. Electron Microscopy. New York-London. 

 Wyckoff, R. W. G. and Corey, R. B., 1936. (Virus protein, X-ray analysis.) J. biol. Chem. 



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 Young, P., 1938. (Starch grains of Phaseolus and Canna.) Bull. Torrey bot. Club 65. i. 

 Zacek, J. and Rosenberg, M., 1950. (Erythrocyte, electron microscopy.) Biochim. 



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 Zacharias, E., 1883. (Nuclein and plastin.) Bot. Ztg. 41. 209. 

 Zernike, p., 1939. (Short-range order of molecules.) Z. Elektrochem. 45. 183. 

 Zernike, p., 1946. (Phase contrast microscope.) in A. Bouwers Achievement in optics, 



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 Zetzsche, p., 1932. (Cutin.) Handb. d. Pflanzenanalyse 3. i. 205. Berlin. 

 Ziegenspeck, H., 1938. (Turgor pressure mechanisms.) Bot. Arch. 39. 268. 

 ZiMMER, K. G. and Timofeeff-Ressovsky, N. W., 1942. (Gene mutation by irradiation.) 



Z. indukt. Abstamm. u. Vererb. lehre 80. 353. 

 ZiMMERMANN, A., 1 896. Morphologic und Physiologic des pflanzlichen Zellkerns. Jena. 

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Zirkle, C, 1926. (Chloroplasts, microscopic structure.) Amer. J. Bot. 8. 301, 321. 

 ZocHER, H., 1925. (Structure in sols.) Z. anorg. Chem. 147. 91. 

 ZocHER, H., 1931. (Mesophases, optics.) Z. Kristallogr. 79. 122. 

 Zollikofer, C, 1935. (Cell wall, extensibility.) Ber. dtsch. bot. Ges. 53. 152. 

 ZsiGMONDY, R., 1921/22. (Definition of micelles.) Z. phys. Chem. 98. 14, loi. 293. 

 ZsiGMONDY, R., 1925. Kolloidchemie. Leipzig. 

 Zworykin, V. K., 1940. (Electron microscope.) Science 92. 51. 



ZwoRYKiN, V. K., 1 941. (Electron microscopy.) Cold Spr. Harb. Symp. quant. Biol. 9. 194. 

 Zworykin, V. K., Hillier, J. and Vance, A. W., 1941. (Electron inicroscope.) Trans. 



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 Zworykin, V. K., Morton, G. A., Ramberg, E. G., Hillier, J. and Vance, A. W., 



1945. Electron optics and the electron microscope. New York. 



