Fig.  j.  Cross-section  Senega  (Southern  variety);  a,  cork  cells;  5,  paren- 
chyma ;  c,  woody  centre  ;  d,  tracheae. 
quillaja.  In  the  latter  drug  are  found  elements  not  at  all  repre- 
sented in  the  senega.  Attention  is  called  to  the  strongly  marked 
medullary  rays,  to  the  sclerotic  tissue,  to  the  bast  fibres,  and  more 
jk~b 
\  --c 
I—-  e 
II 
Fig.  4.  Longitudinal  section  Senega  (Southern  variety)  ;  a,  cork  cells;  b> 
parenchyma  ;  c,  parenchyma  ;  d,  woody  cells  ;  e,  tracheae. 
