434  American  Pharmaceutical  Association.  \K™vl™^XwT.' 
be  found  true  that  all  of  these  new  compounds  have  a  physiological 
action.  The  authors  will  furnish  the  material  to  any  one  who 
is  in  a  position  to  make  the  necessary  experiments.  A  description 
of  the  following  compounds  will  shortly  be  published.  Trichlor- 
ethylidenedi-m-bromphenamme,  white  needles, melt  at  ii5°-ii6°  C. 
Trichlorethylidenedi-p-aminobenzoic  acid,  crystalline  masses,  melt 
at  2i5°-220°  C.  Trichlorethylidenedi-m-aminobenzoic  acid,  color- 
less crystals,  melt  at  2400  C.  with  decomposition.  Trichloreth- 
ylidenedi-o-nitro-p-tolamine,  colorless  crystals,  melt  at  io8°-io9°  C. 
Chloral-2-nitro-4-toluidine,  yellow  needles,  melt  at  i87°-i88°  C. 
Trichlorethylidenedi-p-nitro-o-tolamine,  long  golden-yellow  needles, 
melt  at  I42°-I43°  C.  Trichlorethylidenedi-m-nitro-p-tolamine, 
rjrownish-yellow  needles,  melt  at  i65°-i66°  C.  Trichlorethylidenedi- 
m-chlor-p-tolamine,  long  silvery-white  needles,  melt  at  no°  C. 
Chloral-m-chlor-p-toluidine,  silvery-white  needles,  melt  at  1820- 
183 0  C.  Trichlorethylidenedi-p-brom-o-nitrophenamine,  small 
lemon-yellow  needles,  melt  at  igo°-igi°  C.  Trichlorethylidenedi- 
p-brom-m-nitrophenamine,  yellow  needles,  melt  at  I47°-I48°  C. 
Trichlorethylidenedi-p-iodophenamine,  gray  branching  needles,  melt 
at  1230  C.  Trichlorethylidenedi-4-brom-i-naphthylamine,  violet 
powder,  decomposing  without  melting.  Trichlorethylidenedi-p- 
aminoacetophenone,  thin  rectangular  plates,  melt  at  1620  C. 
Resin  of  Podophyllum. 
By  Wilbur  L.  Scoville. 
In  this  paper  the  author  reviews  the  history  of  the  resins  of 
Podophyllum  peltatum  and  P.  emodi.  As  a  distinguishing  test,  the 
color  of  the  solution  is  sufficient.  While  it  is  undoubtedly  true  that 
the  color  of  the  resin,  as  it  appears  on  the  market,  may  be  varied  by 
details  in  precipitation,  drying,  etc.,  so  that  the  color  in  the  dry 
form  is  of  little  or  no  value,  in  solution  each  has  a  distinctive  color. 
The  resin  of  P.  peltatum  gives  solutions  of  a  reddish-brown  color, 
while  those  of  P.  emodi  have  a  marked  olive-green  tint,  with  but 
traces  of  brown,  and  this  is  especially  marked  in  benzol  and  chloro- 
form solutions.  Both  resins  are  entirely  soluble  in  methyl,  ethyl, 
butyl,  and  amyl  alcohols,  in  ethyl  and  amyl  acetates,  and  in  acetone 
and  pyridine.    Benzoyl  chloride  forms  a  compound  with  each. 
The  following  table  gives  the  percentage  of  resin  of  each  variety 
which  was  found  to  be  soluble  in  the  respective  solvents,  with  the 
