130 Prescott \ — Flowering Curve of the Egyptian Cotton-plant. 
Literature cited. 
W. L. Balls (1912) : The Cotton Plant in Egypt, p. 65. 
(1915) : The Development and Properties of Raw Cotton, p. 47. 
B. G. C. Bolland (1917) : A gricultural Journal of Egypt, vii. 1 2-1 19. 
: Cotton -growing Statistics obtained by the Botanical Section in 1915 from 
Experiments with respect to the Improvement of Existing Varieties. 
T. B. Robertson (1908) : Arch. f. Entwicklungsmechanik, xxvi. 108. 
(1910-1915): University of California Publications in Physiology, iv. 211. 
H. S. Reed (1920) : Journal of General Physiology, ii. 545-61. The Nature of the Growth 
Rate. 
