1. HOTRIENTS: THE CHQUCAL ELEMEmS (Continued) 



U6-1, 1919. (130) Ibia., eitaUl, 19511. (IJl) Bertrand, G. , Bull. Soc. Chlm. France IV UtUgU, 1912. (152) Steinberg, R. 

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 (155) Rahn, 0., j7"Bact. 52:593, 1956. (136) Bertrand, G. , Bull. Soc. rhim. blol. 25:'t67, 19'H. (157) Bokomy, T. , Zentr. 

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 ZoBell, C. E. , and Greaves, J. D. , J. Bact. l6:l»09, 1928. (lUO) McHargue, J. S., and Calfee, B. K., Plant Physiol. 6:559, 

 1951. (I'll) Rahn, 0., J. Bact. 32:395, 19567" (l't2) Brenchley, W. E. , Biol. Rev. Cambridge, Rill. Soc. 18:159, 19't5. (l'»5) 

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 H. , Arch. Blochem. 1:U25, 19^5. (lUfi) Young, E. G. , Begg, R. W. , and Pentz, E. I., Arch. Biochem. 5:121, 19Wt. (l'*7) Woolley, 



D. W. , J. Biol. Ch™. Ill0:511, I9U1. (1U8) Zletarov, A., and Kalcheva, P., Blochem. Z. 28U:12, 1955. (l^g) Wilson, P. W. , 

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 1939.~Tl58) Teresl, J. D. , Hove, E. , Elvehjem, C. A. , and Hart, E. B. , Am. J. Physiol. ll»0:515, 195't. (159) Skinner, J. T. , 

 and McHargue, J. S. , Am. J. Physiol. 1|0:585, 19'»5. (I60) Follis, R. H. , Jr., Am. J. Physiol. 150:520, 191*7. (I6I) Smith, 



E. L. , Nutr. Abstr. and Rev. 20:795, 1951. (l62) Leirts, U. J., Register, U. D. , Thoii5)Son, H. T., and Elvehjem, C. A., Proc. 

 Soc. Exp. Biol, and Med. 72:1*79, 191*9. (163) Glass, B. , in A symposium on copper metabolism , Baltimore: Johns Hopkins 

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 Z. physiol. Chem. 22:1, I896. (159) Bassett, A. M. , et al. , Am. J. Med. Sci. 202:516, 1941. (170) Kline, H. , et al. , Am. 

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 TI77) Kellln, D. , and Mann, T. , Nature, 144: 44 2, 1959. (178) Hegsted, D. M. , et al. , Suppl. Pub. Health Rep., No. 179, 1945. 

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 anl Warrington, K. , Ann. Bot. 41:167, 1927. (192) Sonmer, A. L. , ani Lipman, C. B. , Plant Ffcysiol. 1:231, 1926. (193) 

 Sommer, A. L. , Plant Physiol. 57339, 1931. (194) Bonner, J., in Plant biochenlstry. New York: Academic Press, 1950. (195) 

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 1955. (200'Fsteinberg, R. A., J. Agr. Res. 57:461, 1958. (201) Steinberg, R. A., Plant Physiol. 21:42, 1946. (202) Steinberg, 

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 (215) Oris, E. , Compt. rend. Acad, scl., Paris 17:679, 1843. (2l4) Ibid., 19:lil8, 1844. (215) McClendon ani Gershon-Cohen, 



J. Agr. Food Chem. 1:464, 1955. (2l6) Hlnton, T. , Noyes, D. T. , and Ellis, J., Physiol. Zool., 24:555, 1951. (217) Gale, 

 E. F. , The chemical activities of bacteria . New York: Academic Press Inc., 1952. (2l8) Eades, C. H. , Jr., anl Womack, M. , 

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 Arch. Blochem. and Biophysics 45:247, 1955. (221) Shorb, M. S., Kao, K. Y. T. , and Scott, W. M. , Symposium on hematopolesls , 

 2nd International Cong. Biochem. Paris, 1952. (222) Merrill, A., and Clark, M. W. , J. Bact. 15:267, 192b. T225) Wllgus, H. 

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 (254) Sonmers, A. L. , Soil Sci. 60:71, 1945. (255) Haze, P., Ann. Inst. Pasteur 26:21, 1914. (256) Hoaglani, D. R. , Soil Sci. 

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