.m.  Jour.  Pharm.  \ 
February,  1897.  j 
Solatium  Carolinense. 
79 
also  absent.  The  medullary  rays  are  distinct  and  slightly  undulate, 
the  number  of  rows  varying  from  two  to  five  or  six. 
A. 
73. 
Fig.  4,  portion  of  a  transverse  section  of  a  root  of  Solanum  Carolinense, 
magnified  45  diameters.  A,  ruptured  cork  tissue  ;  b  and  b' ',  secretion  cells 
containing  calcium  oxalate  ;  c,  cambium  zone  ;  d,  medullary  ray;  e,  one  of  the 
concentric  layers  of  ducts,  alternating  with  wood  parenchyma. 
The  underground  stem  {Fig.  6).  shows  the  pericycle  relatively 
thicker  and  the  cortex  thinner  than  in  the  root.    The  cork  tissue 
