Pel 1921] HARRIS AND OTHERS SEEDLINGS OF PHA5EOLUS 



73 



^E 3. dumber of primary double bundles at base of hypocotyl in trimerous and dimerous 



seedlings 



FIG. i v v Pea-em Jv^ faniuenoy distribution for number of prinvir\- double bundles at 

 be of hypocotyl in dimoa&amp;gt;u# v.s.-&amp;gt;li&amp;lt;.i dot^ and trimerous 



