WHITE: INHERITANCE OF HEIGHT IN PEAS 319 
crossed with Wachs Schwert (40-60 internodes tall). In such 
crosses, the Е, generation is to be regarded as intermediate, so 
far as the gross character height is concerned, although this inter- 
mediate condition is brought about through incomplete dominance 
of high over low internode number. Tschermak (от) also men- 
tions obtaining intermediates in F;, as regards height, from crosses 
of talls and dwarfs, though he says nothing about internode 
Ез generation tall and dwarf segregates from cross of tall X dwarf. 
FIG r. 
Photo from cultures of E. M. East. 
number or length. Тһе Е, generation from tall X dwarf or its 
reciprocal consists of four classes—talls with long internodes, half- 
dwarfs with either long or short internodes, and true dwarfs. 
These approximate а 9 :3:3:1 ratio as in the case of short 
internode halí-dwarf X long internode half-dwaif. Laxton (об) 
obtained practically these same results. This is the cross usually 
