Fig.  6.  Cross-section  of  the  root,  magnified  500  diameters  ;  a,  epiblema  or 
epidermis  of  the  root  ;  b,  exodermis  or  hypoderma  of  the  root  ;  c>  cortical 
parenchyma  ;  d,  endodermis  ;  e,  pareuchymatons  pericycle  ;  /,  phloem  of  the 
vasal  bundles  ;  g,  xylem  of  the  vasal  bundles. 
