AmAS-if9hrm-}  Aristol.  175 
was  dark  brown,  porous,  very  slowly  soluble  in  cold,  readily  in  hot 
water  ;  these  solutions  were  strongly  acid.  Cold  water  containing  a 
small  amount  of  ammonia  readily  dissolved  it  giving  a  dark  red 
solution,  from  which  an  excess  of  acetic  acid  precipitated  a  dark 
brown  substance. 
A  one  per  cent,  solution  reacted  as  follows : 
Gelatin,  
Tartar  emetic,  .  . 
arid  with 
Ammon.  chloride, 
Lead  acetate,  .  . 
Copper  acetate,  . 
Ammon.  molybd,  "I 
and  nitric  acid,  j 
Ivime  water,  .  .  . 
Uranium  acetate,  . 
Potass,  bichrom., 
reddish  yellow 
precipitate. 
same, 
same. 
drab  precip. 
brown  precip. 
dark  green 
precipitate, 
dark  purple 
precipitate, 
red  brown 
precipitate, 
dark  brown 
precipitate. 
j  ' 
j  Ferric  chloride,  . 
(acid) 
I  Ferric  chloride,  . 
(neutral) 
Ferric  acetate,  .  . 
Ferrous  sulph., 
Fehling's  solution, 
Silver  nitrate,   .  . 
1  Copper  sulphate,  . 
and  with 
Ammon.  hydrate, 
in  excess. 
dark  green 
precipitate, 
dark  blue 
precipitate. 
same. 
no  change. 
reduced. 
no  change ;  when 
boiled  reduced 
to  metallic  state. 
no  change. 
dark  brown 
precipitate. 
Gallic  Acid. — The  moist  roots,  finely  cut,  macerated  with  stronger 
ether,  yielded  to  this  solvent  but  a  small  amount  of  extract,  which 
when  treated  with  water  showed  this  acid  to  be  present  as  follows: 
In  roots  collected,  in  warm  weather,  faint  traces,  and  in  those  gath- 
ered in  colder  seasons  more,  although  at  no  time  amounting  to 
more  than  distinct  traces.  The  same  treatment  of  the  July,  1889, 
lot,  at  the  present  time,  showed  considerable  to  be  present. 
Starch. — This  constituent  was  determined  in  the  original  drug, 
and  all  of  the  three  estimations,  mentioned  above,  were  carried  out 
at  the  same  time.  The  great  difference  in  amount  between  October 
and  March  drug  was  also  noticed  under  the  microscope.  That  col- 
lected in  March  showed  the  cells  loaded  with  starch  granules,  while 
in  that  collected  in  October  the  cells  were  almost  free  from  starch. 
WHAT  IS  ARISTOL,  AND  HOW  IS  IT  MANUFACTURED  ? 
By  George  M.  Beringer,  Ph.G. 
Read  at  the  Pharmaceutical  Meeting  of  the  Philadelphia  College  of  Pharmacy,  March  17. 
The  search  for  a  substitute  for  iodoform,  possessing  similar  anti- 
septic properties,  but  devoid  of  its  disagreeable  odor,  has  enriched 
our  materia  medica  with  several  other  valuable  iodine  products,  such 
as  iodol,  soziodol  and  bismuth  sub  iodide.    Recently  attention  has 
