684 
A  romadendrin. 
/  A-Dj .  Jour.  Pharm 
l  December,  1896. 
All  alkaline  solutions  give  a  yellow  to  orange  color,  ranging 
from  the  light  yellow  given  by  lime-water  to  the  orange  color  given 
by  ammonia. 
Ferric  chloride  gives  a  purplish-brown  color  in  all  solutions,  how- 
ever dilute;  there  is  not  the  slightest  indication  of  a  green  color,  and 
it  does  not  readily  form  a  precipitate. 
Ferric  acetate  gives  a  lighter  purplish-brown  and  forms  a  precipi- 
tate. 
Ferric  chloride,  added  to  a  portion  of  the  dry  substance,  gives  a 
purplish -brown  color.  With  "  eudesmin  "  this  reagent  only  stains 
the  crystals  slightly  yellow. 
COMPOSITION  OF  AROMADENDRIN. 
Combustion  was  made  of  the  substance  after  repeated  crystalliza- 
tion from  alcohol  and  water ;  it  was  perfectly  white,  had  the  charac- 
teristic felted  appearance  of  this  substance  when  crystallized  from 
hot  water ;  it  gave  the  characteristic  color  reactions  perfectly,  and 
melted  on  the  surface  of  mercury  at  21 6°  C.  The  portion  taken 
for  combustion  was  previously  heated  in  air  bath  at  1 20°  C,  as  the 
whole  of  the  water  is  given  off  at  that  temperature,  no  further  loss 
being  experienced  when  melted.  It  was  extremely  light,  the  quan- 
tity taken  filling  the  platinum  boat. 
No.  1 : 
•1550  gramme  gave  "348  gramme  C02, 
and  '0648  gramme  H20. 
Bqual  to  61*233  Per  cent,  carbon. 
4  "645       "  hydrogen. 
34*122       "  oxygen. 
No.  2 : 
•1324  gramme  gave  '2982  gramme  C02. 
and  '0550  gramme  H20. 
Equal  to  61*4252  per  cent,  carbon. 
4*6156       "  hydrogen. 
33*9592       "  oxygen. 
Mean  of  the  two  combustions  : 
61*3291  carbon. 
4*6303  hydrogen. 
34*0406  oxygen. 
From  which  we  may  deduce  the  formula  : 
^29^26^12* 
