Am.  Jour.  Pfaarru.  ) 
October,  1898.  / 
Poivdered  Vegetable  Drugs. 
(2.  Without  Starch: 
30.  Coca. — Crystals  cubical  3x3^,  coffin-shaped,  3  x  10  /jl  ;  pecu- 
liarity of  epidermis ;  absence  of  hairs  ;  odor. 
31.  Eucalyptus. — See  No.  15. 
32.  Gaultheria. — See  No.  17. 
33.  Hamamelis. — Crystals  7- 10  jm;  1 -celled  non-secreting  hairs; 
tannin  and  resin  masses. 
34.  Hyoscyamus. —  Crystals  of  two  kinds — rosette-shaped  and 
more  or  less  cubical  (10  x  10  //,),  the  latter  chiefly.  Numerous 
secreting  and  non-secreting  hairs. 
35.  Senna. — See  No.  21. 
36.  Stramonii  Folia. — See  No.  22.  The  rosette-shaped  crystals 
are  generally  in  greater  abundance. 
37.  Uva  Ursi. — Prismatic  and  coffin-shaped  crystals  (7  x  10  /j), 
in  crystal  fibres;  tannin  masses;  characteristic  sklerenchyma  fibres; 
no  oil-cells  or  reservoirs. 
C.     CRYSTALS  ACICULAR  (RAPHIDES). 
38.  Cypnpedium. — Crystals  35-58  yu  long;  starch  2-4^;  root 
hairs  ;  oil  and  resin  cells  ;  characteristic  odor. 
39.  Helonias—  Characteristic  small  acicular  crystals (35  ^  long)  in 
small  groups;  starch. 
40.  Sarsaparilla. — Crystals  68  fji  long  ;  starch  10-20  /x ;  skleren- 
chyma fibres.  In  Mexican  sarsaparilla  find  a  pronounced  yellowish 
hypodermis  and  endodermis,  the  walls  of  which  are  unequal  in 
thickness.  In  Honduras  the  latter  is  not  so  pronounced.  Starch  in 
both  rather  characteristic. 
Needle-shaped  crystals  other  than  calcium  oxalate  are  sometimes 
found  in  the  folloiving : 
41.  Buchu. — See  No.  9. 
42.  Coca. — See  No.  30. 
43.  Chclidonium. — See  No.  52. 
44.  Gaultheria. — See  No.  17.  1 
45.  Lobelia. — See  No.  61. 
d.     CRYSTALS  AS  FINE  SAND-LIKE  PARTICLES    IN    PARTICULAR  CELLS. 
LIKELY  TO  FIND  ALSO  ACICULAR  CRYSTALS. 
46.  Belladonnee  Folia. — Characteristic  grayish  or  dark-colored 
cells  containing  small  angular  crystals  of  calcium  oxalate ;  few 
secreting  and  non-secreting  hairs. 
