CONTROL OF LEAF GROWTH 179 



Gordon, S. A. 1955. Studies on the mechanism of phytohormone damage by 



ionizing radiation. Pror. Intern. Conf. Atomic Eneri^y, A/8/P/97 Geneva, 



Switzerland. 

 . 1956. The biogenesis of natural auxins. The Chemistry and Mode of 



Action of Plant Growth Substances, R. L. Wain and F. Wightman, Editors. 



Academic, New York, 65-75. 

 Ham, R. G., R. E. Eakin, C. G. Skinner, and W. Shive. 1956. Inhibition of 



regeneration in hydra by certain new 6-(phenylalkyl)-aminopurines. J. Am. 



Chem. Soc, 78, 2648. 

 Johnson, S. P., W. C. Hall, and J. L. Liverman. 1956. Growth and fruiting 



responses of intact tomato plants to far-red radiation. Physiol. Plantarum, 9, 



389-95. 

 Joklik, W. K. 1956. The occurrence of adenine and adenyl succinic acid m 



mammalian liver. Biochim. et Biophys. Acta, 22, 211-12. 

 Juhren, M. C. and F. W. Went. 1949. Growth in darkness of squash plants fed 



with sucrose. Am. J. Botany, 36, 552-559. 

 Kahn, A., J. A. Goss, and D. E. Smith. 1957. Eflfect of gibberellin on germina- 

 tion of lettuce seed. Science, 125, 645-46. 

 Klein, W. H., R. B. Withrow, and V. B. Elstad. 1956. Response of the hypo- 



cotyl hook of bean seedlings to radiant energy and other factors. Plant 



Physiol, 31, 289-94. 

 Lang, A. 1956. Gibberellin and flower formation. Natiirwissenschaften, 43, 544. 

 Live'rman, J. L. 1955. The physiology of flowering. Ann. Rev. Plant Physiol., 6, 



177-210. 

 Liverman, J. L., and J. Bonner. 1953. The interaction of auxin and light in the 



growth responses of plants. Proc. Natl. Acad. Sci. U. S., 39, 905-16. 

 Liverman, J. L., and S. P. Johnson. 1957. Control of arrested fruit growth in 



tomato by gibberellins. Science, 125, 1086-87. 

 Liverman, J. L., M. P. Johnson, and L. Starr. 1955. Reversible photoreaction 



controlhng expansion of etiolated bean-leaf disks. Science, 121, 440-41. 

 Lockhart, J. A. 1956. Reversal of the light inhibition of pea stem growth by 



the gibberellins. Proc. Natl. Acad. Sci. U. S., 42, 841-48. 

 Miller, C. O. 1951a. Expansion of Chenopodium album leaf disks as affected by 

 coumarin. Plant Physiol, 26, 631-34. 



. 1951b. Promoting effect of cobaltous and nickelous ions on expansion 



of etiolated bean leaf disks. Arch. Biochem. Biophys., 32, 216-18. 



1952. Relationship of the cobalt and light effects on expansion of 



etiolated bean leaf disks. Plant Physiol, 27, 408-12. 

 1957. Personal communications. 



Miller, C. O., F. Skoog, M. H. Von Saltza. and F. M. Strong. 1955. Kinetin a 

 cell division factor from deoxyribonucleic acid. /. Am. Chem. Soc, 77, 

 1392. 



Parker, M. W., S. B. Hendricks, H. A. Borthwick, and F. W. Went. 1949. 

 Spectral sensitivities for leaf and stem growth of etiolated pea seedlings and 

 their similarity to action spectra for photoperiodism. Am. J. Botany, 36, 194- 

 204. 



Salisbury, F. B. 1957. The mechanism of action of cobaltous ion, 2,4-dinitro- 

 phenol and auxins in flowering. Plant Physiol, 32, (Suppl.), x. 



