Pharm. 
August,  1898. 
}  Structure  of  Gelsemium.  383 
To  recapitulate : 
Rhizome.  Overground  Stem.  Root. 
Cork  18  to  20  cells.  Cork  4  to  6  cells.  Cork  16  to  18  cells. 
Collenchyma  wanting.       Collenchyma,  4  to  7  cells,  Collenchyma  wanting. 
containing  chlorophyll. 
Parenchyma,  containing    Parenchyma,    containing  Parenchyma,  containing 
oil,  starch  and  crystals       starch,  oil  and  crystals     starch,  oil  and  crystals 
calcium  oxalate.  calcium  oxalate.  calcium  oxalate. 
Bast  fib  res.  Bast  fibres.  Bast  fibres  wanting. 
Cambium.  Cambium.  Cambium. 
Medullary  rays.  Medullary  rays.  Medullary  rays. 
Ducts  and  libriform  tissue.  Ducts  and  libriform  tissue.  Ducts  and  libriform  tissue. 
Internal  phloem.  Internal  phloem.  Internal  phloem  wanting. 
Hollow  center  eccentric.   Hollow  center  central.       No  hollow,  but  elements 
of  primary  fibro-vascular 
bundle  in  centre. 
From  this  investigation  certain  new  features  have  come  to  light 
regarding  the  structure  of  the  rhizome,  overground  stem  and  root 
of  gelsemium.  Prof.  Kraemer  is  of  the  opinion,  from  observations 
made,  that  all  future  investigations  of  the  drug,  to  be  of  any  value, 
must  be  made  in  the  home  of  the  plant.  Even  hothouse  material 
is  not  sufficient  to  determine  the  morphological  differences  in  these 
various  plant  portions  with  which  we  have  to  deal. 
LITERATURE. 1 
REFERENCES  TO  GELSEMIUM  SEMPERVIRENS  AND   GEESEMINE   IN  E.  M.  J.2 
FROM  1862  TO  1892,  INCLUSIVE. 
Gelsemium,  1862,  p.  48. 
"  poison  by,  1862,  p.  121. 
Gelsemin,  1863,  p.  185. 
Gelsemium  in  delirium  tremens,  1S64,  p.  193. 
1866,  pp.  364,  440. 
1867,  p.  513. 
1868,  pp.  190,  437. 
1 S69,  pp.348,  388, 
"        poison  by,  1869,  pp.  140,  583. 
"        galvanizing  antidote  to,  1869^.568. 
1870,  pp.  105,  532. 
1872,  p.  98. 
"        in  tetanus,  1892,  pp.  19,  98. 
"        in  odontalgia,  1874,  417. 
1875,  p.  94. 
1 1  am  indebted  to  Prof.  J.  U.  Eloyd  for  the  detailed  list  of  references  to  Gelsemium  semper- 
virens. 
2  Eclectic  Medical  Journal,  Cine. 
