Am.  Jour.  Pharm.  \ 
March,  1918.  s 
Wafer  Ash  Bark. 
After  a  close  microscopical  examination  of  a  large  number  of 
transverse,  radial-longitudinal  and  longitudinal-tangential  sections 
of  this  bark;,  the  writer  has  been  unable  to  agree  with  the  author  of 
the  N.  F.  IV  description  of  the  drug  upon  the  presence  of  non- 
Fig.  4.  Transverse  section  of  Euonymus  N.  F.  (wahoo  bark).  A,  cork; 
B,  cork  cambium;  C,  cortex;  D,  portion  of  primary  medullary  ray;  E,  sec- 
ondary medullary  ray  in  phloem  patch.    (Photomicrograph  X  22.) 
lignified  bast  fibers  there  mentioned.    The  "  bast  fibers  "  there  indi- 
cated were  probably  wood  fibers,  present  in  the  wood  of  the  root, 
some  of  which  frequently  adheres  to  medicinal  barks. 
Philadelphia  College  of  Pharmacy, 
Pharmacognosy  Laboratory. 
