C. A. BARBER 



145 



Colour of the Canes. 

 In no respect do the seedlings of any one batch differ more widely among 

 themselves than in the colour of the canes (c/. PI. XXVIII). It is moreover 

 extremely difficult to classify these colours, because of the number of different 

 shades in any one cane, and it is probable that each observer would adopt a 

 different system of grouping. It is, naturally, not possible to determine the 

 colour of a cane in very young seedlings and the following facts have been 

 elicited from a study of the seedlings of 1912-14 at crop time, the colour of all 

 having been recorded when they were prepared for final chemical analysis. 

 The classes adopted were as follows : — 



(1) Green, including various shades of green, yellow, grey to almost white 

 through heavy bloom, there being no tinge of brown, pink, red-brown or 

 purple piesent. 



(2) Brownish and vinous tinged greens. 



(3) Purple, claret and red, the latter being rather indehnite, but neither 

 claret nor purple. 



(4) Striped. 



Subjoined is a table giving the colours of the parents and the proportional 

 colours of their offspring. 



Colour of canes in seedlings and 'parents. 



