Bibliography 



Allard, H. A., 1948. "Length of day in the climates of past geological eras and 



its possible effects upon changes in plant life," pp. 101-119 in A. E. Murneek 



and R. O. Whyte (eds.), Vernalization and photoperiodism, Waltham, Mass.: 



Chronica Botanica. 

 Alvim, P. de T., 1960. 'Moisture stress as a requirement for flowering of coffee," 



Science, 132: 354. 

 Arber, A., 1934. The gramineae. A study of cereals, bamboo and grass, New 



York: Macmillan, xvii 4- 480 pp. 

 Arnold, C.-G., 1959. "Die Bliitenoffnung bei Oenothera in Abhangigkeit vom 



Licht-dunkelrhythmus," Planta, 53: 198-211. 

 Audus, L. J., 1959. Plant growth substances, 2d ed., New York: Interscience 



Publishers, xxii + 554 pp. 



Ball, N. G., 1933. "A physiological investigation of the ephemeral flowers of 

 Turner a ulmifolia L. var. elegans Urb." New Phytol., 32: 13-36. 



, 1936. "The effect of nocturnal illumination by different regions of the 



spectrum on the subsequent opening of flower-buds," New Phytol., 35: 

 101-116. 



Biological clocks, 1960. Cold Spring Harbor Symposia on Quantitative Biology, 

 XXV. Cold Spring Harbor, L. I., New York: Long Island Biological Asso- 

 ciation, xii + 524 pp. 



Blaney, L. T., and Hamner, K. C, 1957, "Interrelations among effects of tem- 

 perature, pholopcriod, and dark period on floral initiation of Biloxi soy- 

 bean," Bot. Gaz., 119: 10-24. 



Bonner, J., 1949. "Further experiments on flowering in Xanthium," Bot. Gaz., 

 110: 625-627. 



, 1959a. "The photoperiodic process," pp. 245-254 in R. B. Withrow (ed.), 



Photoperiodism and related phenomena in plants and animals, Washington, 

 D.C.: American Association for the Advancement of Science. 



141 



