358 
Analytical  Researches  and  Investigations. 
Am.  Jour.  Pharm^ 
July, 1882. 
Potassio-hismuthic  Iodide  as  a  Reagent  for  Alkaloids.  By 
Maugni. — In  the  course  of  a  forensic  examination  the  author  observed 
that  the  abov^e-named  reagent,  as  recommended  by  Dragendorff  on 
account  of  its  sensitiveness,  and  which  he  had  prepared  according  to 
the  Russian  method,  gave  also  with  pure  water  a  turbidity.  It  was 
then  prepared  by  the  author,  by  the  admixture  of  3  parts  of  potas- 
sium iodide,  16  parts  of  bismuth  iodide,  and  3  parts  of  hydrochloric- 
acid.  When  prepared  in  this  way  it  gave  no  turbidity  with  water,, 
was  very  sensitive,  and  permitted  even,  what  has  been  refuted  by  Dra- 
gendorff, the  discrimination  of  the  individual  alkaloids  by  means  of 
the  color  and  behavior  of  the  precipitate. — Ibid.,  No.  25,  1882,  p.  494,. 
from  Gazz.  Chim.,  12,  p.  155. 
Detection  of  Sodium  Salicylate  in  Milk. — Girard  mixes  1  liter  of 
milk  with  1  liter  of  warm  water,  then  adds  5  drops  of  acetic  acid,  fil- 
ters, and  agitates  the  liquid  with  J  liter  of  ether ;  the  ether  is  then- 
decanted,  and  allowed  to  evaporate  spontaneously.  *  If  salicylic  acid 
were  present,  the  residue  gives  with  one  drop  of  a  1  per  cent,  solution? 
of  ferric  chloride  a  violet  coloration. — Chem.  Ztg.,  6,  p.  385,  from 
Giorn.  Farm.  Chim.,  31,  p.  124. 
The  Constituents  of  the  Cola  Nut,  Gourou  or  Ombene  (seeds  of  Ster- 
culia  acuminata.  Pal.  de  Bavois). — Heckel  and  Schlagdenhauffen  have- 
submitted  the  cotyledons  of  the  cola  nut  to  analysis,  with  the  follow- 
ing result.    100  parts  were  found  to  contain : 
Caffeine, 
Theobromine, 
Tannin, 
Fatty  matter, 
Tannin, 
Cola  red. 
Glucose, 
Fixed  salts, 
Starch, 
Gum, 
Coloring  matters, 
Protein  substances 
Ash, 
Water,  . 
Cellulose, 
2-3481 
0-023  [  Substances_soluble- 
0-027  I     in  chloroform. 
0-  585.J 
1-  591  I 
1-  290  I  Substances  soluble- 
2-  875  j    in  alcohol. 
0-070  J 
33-754 
3-  040 
2-  561 
6-761 
3-  325 
11-919 
29-831 
100-000 
This  analysis  shows  that  the  cola  nuts  are  richer  in  caffeine  than? 
the  most  esteemed  varieties  of  coffee,  and  that  this  base  is  contained 
