W. IUtkson and Ida Sitttdn 



20: 



Kxpenmeuts illujitrattng behamour of vanoua heteriKygoxui giuf/les 

 (.33717,17717, 16717,84717). 



In 33717 tho sin^Ir factor wnit in frnin the iiioIIht's si<l«', ami tlnT«* 

 is a dour iiHlicalion that the jhiIIi'M was pndoininantly douhh'; but in 

 17717 and IGVn, similarly bnnl, tht' pollon w;is prrcloniinantly Hin^^l**. 

 In .'UM7, the «»xact nripHKNil of 33*/17, tho sin^'lc factor wmt in from 

 tho father's side, and the imnd)ei*s though insuthcicnt, do not .suggest 

 8OX -linkage. 



31 71/18 33»/17 Relfoil 



82 7*2/18 Do. X 7'/ 17 double ^ 



83 73/18 3.')8/17 double x 33V17 <r 



SliKlitlv Mftif Fiilh 



SiiiKlo iK^UhxIic lioulilc Doiihli! (tutihl 



45 



43 

 31 



7 

 25 





 27 



Plate VIII shows the flowers and leaves of Begonia Davisii. 



43 



