A  m  Jour.  Pharm.  1 
January,  1896.  ) 
North  American  Conifer  ce. 
3i 
following  results:  tannin  occurs  in  large  quantity  in  many  of  the 
inesophyll  (folded  parenchyma)  cells,  in  smaller  quantity  in  most  of 
the  other  cells  of  the  same  tissue,  and  apparently  not  at  all  in  a  few 
of  them.    In  the  endodermis  and  pericycle  tissue  (transfusion  tissue), 
Ob  c 
Fig.  2,  small  portion  of  xylem  of  stem  of  Pinus  Strobus,  showing  tracheids 
and  a  secretion  reservoir  in  xylem;  a,  a',  bordered  pits;  b,  a  secreting  cell 
bordering  a  secretion  reservoir;  c,  medullary  ray  composed  of  radially  elong- 
ated cells;  d,  ring  of  growth.    Magnification,  500 diameters. 
little  or  none  was  observed,  but  in  the  phloem  and  other  soft  tissues 
within  the  pericycle,  it  occurred  in  abundance  in  the  protoplasm. 
It  should  be  stated  that  all  of  the  tests  for  tannin  were  made  upon 
fresh  sections  cut  from  the  living  plant,  and  that  the  test  solution 
was  applied  to  the  sections  immediately  after  cutting  them.  The 
