Am.  Jour.  Pharm.  \ 
December,  1898.  J 
Powdered  Vegetable  Drugs. 
6i7 
(possessing  simple  pores)  cells  about  70  x  45  /x ;  yellow  pigment 
cells  of  seed  coat;  oil  and  protein  in  embryo. 
528.  Sago  (Trite). — Slowly  affected  by  cold  water  when  there 
separates  the  characteristic  elliptical,  or  truncate-elliptical  starch 
grains  ( 1 5-20  /x). 
529.  Sago  (Imitation). — Breaks  down  quickly  in  water  and  shows 
characteristic  corn  starch  grains. 
530.  Strophanthus. — Starch  grains  (4  fi)  characteristic;  long  non- 
secreting  hairs  (10  to  1 5  ^  wide) ;  narrow,  almost  colorless,  collapsed 
cells  and  parenchyma  containing  starch,  oil  and  aleuron;  with 
H2S04  should  become  green,  indicating  fresh  and  unimpaired  stro- 
phantus. 
B.   WITH  LITTLE  OR  NO  STARCH. 
a.  Animal  tissues. — On  burning  fragment  on  platinum  foil  gives 
off  odor  of  burning  tissue. 
(a)  Does  not  color  glycerin. 
531.  Cantharis. — Green  metallic  particles  ;  not  hairy. 
532.  Mylabris. — Very  hairy. 
(/?.)  Gives  a  carmine-red  color  to  glycerin. 
533.  Cochineal. 
(b)  Without  starch  but  containing  vegetable  tissues. 
a.  With  Secreting  or  non-secreting  Hairs. 
534.  Anisum. — See  No.  8. 
535.  Arnica  Flores. — See  No.  373. 
536.  Cannabis  Indica. — Characteristic  crystoliths,  with  or  without 
broad  base  attached,  in  latter  CaCOs  in  a  granular  mass.  Entire 
crystolith  about  200  jjl  long ;  oil  secretion  hairs ;  rosette-shaped  cal- 
cium oxalate  crystals  (20  /jl)  ;  characteristic  cells  of  pericarp. 
5  37.  Hamulus. — Characteristic  secreting  hairs  (Lupulin) ;  numer- 
ous rosette-shaped  calcium  oxalate  crystals  (8  fx) ;  non-secreting 
hairs;  characteristic  epidermis ;  ducts  yellowish. 
538.  Rhus  glabra. — Hairs  may  be  numerous,  long,  broken,  1 - 
celled  or  spatulate  (consisting  of  a  chain  of  cells),  containing  a  red 
pigment  dissolved;  pigment  cells;  characteristic  stone  cells  of  peri- 
carp (20  /x  in  diameter  and  walls  4-10  p  thick);  oil  and  protein. 
539-  Rubus  idceus. — Characteristic  long,  more  or  less  curved,  1- 
celled  hairs  (7  /jl  diameter),  containing  a  reddish  pigment ;  loose 
parenchyma,  containing  pigment  and  rosette- shaped  crystals  of  cal- 
cium oxalate  (7  /x) ;  also  characteristic  hairs  of  receptacle  and  calyx. 
