CONTRIBUTIONS  TO  TOXICOLOGY. 
535 
Suiz  Rioya  mentions  this  as  a  proof  of  the  curative  powers  of 
iodine,  even  when  the  symptoms  of  poisoning  with  belladonna 
are  of  longer  duration;  a  fact  to  which  Bouchardat  has  first 
drawn  attention,  recommending  iodine  in  such  cases  as  an  anti- 
dote.   (Buchners  N.  Bepert.  HI.) 
Tannin,  the  best  Antidote  against  Poisonous  Fungi. 
Dr.  Chausarel,  of  Bordeaux,  proves,  by  a  series  of  experiments? 
that  tannin  is  the  best  antidote  against  poisonous  fungse,  and 
recommends  in  such  cases,  if  not  too  much  time  has  elapsed,  first, 
an  emetic,  to  be  followed  by  a  decoction  of  galls,  or,  if  not  con- 
venient, of  Peruvian,  oak  or  pine  bark,  a  small  glassful  to  be 
given  every  five  minutes ;  or,  better  still,  a  solution  of  30  to  40 
grs.  tannin  in  a  bottle  (1|  pts.)  of  water.  He  entirely  rejects 
vinegar,  which  has  been  so  much  recommended.  (Journ.  Med. 
de  Bord.) 
Chemieo-legal  detection  of  Copper. 
A.  Georges,  by  a  number  of  experiments,  has  tried  to  answer 
the  question,  whether  and  in  what  manner,  copper  may  be  dis- 
covered ;  if  arsenic  was  not  found  in  the  carbonaceous  residue  left 
after  the  treatment  of  organic  substances  with  sulphuric  acid,  as 
has  been  proposed  by  Danger  and  Flandin  for  the  detection  of 
arsenic. 
The  results  of  the  experiments  are  as  follows  : 
1.  The  residue  of  the  treatment  of  animal  substances  with 
sulphuric  acid  does  not  impart  any  copper  to  distilled  water,  and 
may,  therefore,  afterwards,  be  used  for  the  extraction  of  this 
metal. 
2.  Nitric  and  muriatic  acids  dissolve  a  perceptible  quantity  of 
copper,  which,  however,  is  very  small,  compared  with  that  remain- 
ing undissolved;  the  simple  charring,  therefore,  must  be  rejected. 
3.  Incineration  is  likewise  insufficient,  as  a  volatilization  of  some 
copper  is  always  unavoidable. 
4.  This  loss  of  copper  is  occasioned  by  the  presence  of  chlorine 
in  the  animal  body. 
5.  Incineration,  with  previous  charring  by  acids,  is  not  produc- 
tive of  that  error,  and  allows  the  extraction  of  all  the  copper. 
{Journ.  de  Chim.  Med.) 
