Aoio°berr,Pimm  }  Powdered  Vegetable  Drugs.  509 
1 1 .  Cannabis  Indica. — Crystals  20  fx ;  characteristic  crystolith 
(200  fx  long)  with  or  without  broad  base  (containing  CaCo3  in  granu- 
lar masses)  attached ;  oil  secretion  hairs ;  characteristic  cells  of 
pericarp. 
12.  Chimaphila. — Crystals  55  fx',  tannin  masses;  chimaphilin,  red 
with  H2S04. 
13.  Conium. — Crystals  2  fx  in  aleuron  grains  about  5  fx  ;  no  oil 
secretion  reservoirs  of  Umbelliferse  ;  characteristic  outer  epidermis 
of  seed  coat  and  pericarp;  odor  alone  or  when  rubbed  with  KOH- 
14.  Eriodictyon. — Crystals  20-25  fx;  long  I -celled,  non-secreting 
hairs ;  also  secreting  hairs. 
15.  Eucalyptus. — Three  kinds  of  crystals,  rosette  shaped,  15  fx 
diameter,  tetragonal  4  x  14  and  25  x  15  fx;  thick,  greenish  cuticle/ 
oil  secretion  reservoirs  and  characteristic  sklerenchyma. 
16.  Fceniculum. — Crystals  2  fx  in  aleuron  grains  about  6  fx ;  oil  se- 
cretion reservoirs  with  characteristic  inner  epidermis  of  pericarp  run- 
ning at  right  angles  to  length  of  the  former ;  peculiar  thickened 
latticed  parenchyma. 
17.  Gaultheria. — Crystals  20  fx,  look  as  though  made  up  of  little 
plates;  stomata  numerous  with  2  " Nebenzellen;"  tufts  of  fan-shaped 
crystals  (28  fx)\  stone  cells  with  reddish  coloring  matter ;  in  chloral 
glycerin  some  tissue  colored  purplish  ;  with  Fe2Cl6  tannin  and  oil 
colored  dark  purple. 
18.  Hedeoma. — See  No.  57.  In  glycerin  mounts  have  sphere- 
shaped  crystals  separating. 
19.  Insect  Powder.-— Py rethrum  roseum,  or  Persian — numerous 
rounded  and  prickly  pollen  grains,  25  fx ;  some  few  crystals  (2x8 
[x)}  in  stone  or  in  parenchyma  adjoining  ;  sklerenchyma  fibres  being 
17  x  105  jx,  and  20  x  160  fx,  in  Dalmatian  ;  fragments  of  T-non  secret- 
ing hairs  less  numerous  than  in  Dalmatian ;  characteristic,  isolated, 
somewhat  rounded  or  elliptical  parenchyma  cells  (75  x  95  fx),  also 
occurring  in  papillae-like  fragments.  Fragments  of  papillae  (epider- 
mis of  corolla),  acute  and  more  numerous  than  in  Dalmatian.  In 
latter  rounded  and  scarcely  perceptible  ;  secretion  hairs  50  fx,  being 
smaller  than  in  Dalmatian  ;  rose  colored  fragments  in  chloral  mounts 
possibly  more  numerous  in  the  Persian  powder. 
20.  Pilocarpus. — Crystals  17  fx\  few  non-secreting  hairs;  long 
sklerenchyma  fibres  ;  oil  secretion  reservoirs  ;  few  palisade  cells. 
21.  Senna. — Possesses  four  kinds  of  crystals — rosette,  cubical,  te- 
