596  Contributions  to  Forensic  Chemistry.  {^Bec^'im^1' 
in  solutions  1  :  10,000,  and  still  recognizable  in  dilutions  1:  100,000. 
A  green  color  is  also  produced  by  gold  chloride,  silver  nitrate,  chromic 
acid,  chlorine  water,  and  mercuric  nitrate,  and  in  acid  solutions  also  by 
chlorinated  lime  and  potassium  ferrocyanide.  Iodine  colors  dark 
brown,  then  dingy  green;  platinic  chloride  yellowish  green;  and  a 
red  color  is  produced  by  warm  fuming  nitric  acid,  by  sulphuric  and 
nitric  acids,  and  by  sugar  and  sulphuric  acid.  The  solutions  of  thai- 
line,  if  not  too  dilute,  yield  precipitates  with  the  usual  reagents  for 
alkaloids. 
Given  to  animals  by  the  stomach  or  subcutaneously,  thai  line  caused 
a  dark  coloration  of  the  urine,  which  contained  very  little  unaltered 
thalline,  but  after  acidulation  yielded  to  benzin,  benzol,  &c,  a  deriva- 
tive colored  green  by  ferric  chloride  ;  after  precipitating  the  phospho- 
ric acid  with  a  few  drops  of  ferric  chloride  the  nitrate  yields  with 
more  ferric  chloride  the  red  color  observed  by  Jaksch. 
Detection  of  Antipyrine. — Blumenbach  recommends  treating  the 
aqueous  infusions  with  petroleum  benzin,  and  after  the  addition  of 
ammonia  with  benzol,  chloroform  or  amylic  alcohol,  when  very  dis- 
tinct reactions  will  be  obtained  with  0.01  or  0.005  gm.,  and  faint  re- 
actions with  0.001  gm.,  of  antipyrine  in  100  ccm.  of  organic  mixtures. 
The  alkaloidal  reagents  produce  precipitates  in  not  too  diluted  solu- 
tions of  antipyrine,  and  ferric  chloride  gives  in  neutral  solution  1: 
1000  a  dark  brown  color,  1:10,000  a  light  brown  and  1:  50,000  a 
light  yellow  color.  Fuming  nitric  acid  colors  dry  antipyrine  dark 
red,  and  in  liquids  green,  recognizable  in  solutions  1:  10,000.  The 
solution  mixed  with  concentrated  sulphuric  acid  and  warmed  with  a 
little  fuming  nitric  acid,  becomes  deep  red. 
Observations  with  animals  prove  that  antipyrine  is  rapidly  resorbed 
and  for  the  next  18  to  24  hours  may  be  detected  in  the  urine;  but 
only  for  a  few  hours  in  the  different  organs.  On  the  other  hand  an- 
tipyrine was  found  after  putrefaction  of  two  weeks  in  all  organs  of 
animals,  that  had  been  killed  about  two  hours  after  swallowing  the 
chemical  or  receiving  it  by  hypodermic  injection. 
J.  M.  M. 
Nitrite  of  Aniyl  in  Opium  Narcosis.— Z'  Union  Medicale  reports  a 
case  of  opium  poisoning,  in  which  the  inhalations  of  nitrite  of  amyl  brought 
on  a  rapid  cure,  when  belladonna  had  failed,  and  the  patient  was  almost 
beyond  help.— \W.  New,  Oct.  2.  1886. 
