42 



THE DEVELOPMENT OF KAW COTTON 



in a house kept at 30 C. The inherited peculiarity in 

 both cases is not actually colour, but the absence or 

 presence of the power to react under environmental 

 influence high temperature in this particular case 

 so as to produce a colour. 



So the plant inherits the capability of reacting in a 

 certain exact and definite way to any set of exactly defined 

 conditions. 



The plant -scaffolding of cotton consists of root and 



FIG. 8. TYPES OF BRANCH-SCAFFOLDING. (DIAGRAMMATIC.) 



Flowering branches are represented as lines bearing crosses, vegetative 

 branches as plain lines. 



Left: Ideal plant, early flowering (cff. Pi. VII., X.). 

 Centre: Usual type of plant (cf. PI. IX , righ:). 



Right: Late flowering. Vegetative branches branch again before flowering 

 branches are formed (cf. PI. II. ). 



shoot, but very little is yet known about the details ot 

 the former, owing to the obvious difficulties which attend 

 investigation. The shoot -scaffolding begins 

 as a main stem, or central axis, from 

 which lateral branches are given off. These branches 

 may be flowering branches (PI. VII.) or ordinary vege- 

 tative branches; which latter may again produce other 

 vegetative branches, or flowering branches, or both, 

 according to the inherited tendencies of the plant (PL IX.)- 



Brandies. 



