ANALYSIS  OF  THE  ROOT  OF  ARUM  MACULATUM.  351 
employment  of  Ricord's  pills  of  iodide  of  mercury,  and  after  the 
daily  external  use  of  tincture  of  iodine,  no  iodine  could  be  found 
in  the  urine. 
It  is  different  when  iodides  enter  the  organism  in  aqueous  so- 
lution ;  after  the  administration  of  4  drachms  iodide  of  potassium, 
the  presence  of  iodine  was  proved  in  the  urine. 
When  making  such  examinations,  I  evaporate  the  urine  nearly 
to  dryness,  digest  with  alcohol,  filter,  evaporate  to  dryness,  dis- 
solve in  a  little  water  and  divide  the  solution  in  two  parts  ;  to  one 
I  add  solution  of  chloride  of  palladium,  to  the  other  starch  and 
chlorine  water. —  Wittstein's  Viert.  Schr.  vii.  546.    J.  M.  M. 
•  
ANALYSIS  OF  THE  FLOWERS  OF  DAPHNE  MEZEREUM. 
By  J.  B.  Enz. 
The  author  examined  the  flowers  of  Daphne  mezereum  with 
the  following  results : 
The  aqueous  distillate  had  an  agreeable  odor  without  sepa- 
rating any  volatile  oil,  which  was  obtained  by  shaking  the  dis- 
tillate with  ether  and  evaporating  spontaneously. 
Daphnin  was  obtained  by  Gmelin  and  Baer's  process  :  the 
alcoholic  extract  was  exhausted  with  water,  the  solution  precipi- 
tated by  sub-acetate  of  lead,  the  washed  precipitate  decomposed 
by  hydrosulphuric  acid,  evaporated,  dissolved  in  alcohol  and 
evaporated  spontaneously. 
The  author  found,  besides  volatile  oil  and  daphnin,  traces  of 
tannic  acid  of  the  variety  that  produces  green  precipitates  with 
iron,  salts,  wax,  fatty  matter,  green  acrid  soft  resin,  sugar,  red 
coloring  matter,  mucilage  (bassorin),  nitrogenous  matter,  albu- 
men, potassa  and  lime,  salts  of  vegetable  acids  and  lignin. 
1000  parts  of  fresh  flowers  contained  water  792,  matter  solu- 
ble in  ether  88,  in  alcohol  34,  in  water  26,  in  diluted  muriatic 
acid  20,  lignin  40. —  Wittsteiris  Viert.  Schr.viij.  23-26. 
J.  M.  M. 
ANALYSIS  OF  THE  ROOT  OF  ARUM  MACULATUM. 
By  J.  B.  Enz. 
The  author  found  the  juice  to  have  a  neutral  reaction.  All 
the  information  regarding  the  volatile  acrid  principle  consists  in 
