206 CHEMICAL AGENTS AND GROWTH 



Miller, C. O. 1956. Similarity of some kinetin and red light effects. Plant 



Physiol., i/, 318-19. 

 Phinney, B. O.. C. A. West, M. Ritzel, and P. M. Neely. 1957. Evidence for 



"gibberellin-like" substances from flowering plants. Proc. Natl. Acad. Sci. 



U. S., 43, 398-404. 

 Radley, M. 1956. Occurrence of substances similar to gibberellic acid in higher 



plants. Nature, 178, 1070-71. 

 Scott, R. A., and J. L. Liverman. 1957. Control of etiolated bean leaf -disk 



expansion by gibberellins and adenine. Science, 126, 122-24. 

 Skinner, C. G., J. R. Claybrook, F. Talbert, and W. Shive. 1957. Effect of 



6- ( substituted )thio- and amino-purines on germination of lettuce seed. Plant 



Physiol, 32, 117-20. 

 Skoog, P., and C. O. Miller. 1957. Chemical regulation of growth and organ 



formation in plant tissues cultured in vitro. Symposia Sac. Exptl. Biol, 11, 



118-31. 

 Snedecor, G. W. 1956. Statistical Methods, 5th ed. Iowa State College Press, 



Ames, Iowa. 

 Stowe, B. B., and T. Yamaki. 1957. The history and physiological action of 



the gibberellins. Ann. Rev. Plant Physiol, 8, 181-216. 

 Wassink, E. C, and J. A. J. Stolwijk. 1956. Effects of light quality on plant 



growth. Ann. Rev. Plant Physiol, 7, 373-400. 



