Ajun°eRi',i87A2EM'}  Gleanings  from  the  European  Journals*  257 
30  per  cent,  of  its  weight  of  chrysammic  acid ;  and  in  fact  I  find  it  a 
more  convenient  source  of  chrysammic  acid  than  crude  aloes.  But 
the  chlorinated  compound,  boiled  with  nitric  acid  and  nitrate  of  sil- 
ver, furnishes  oxalic  and  picric  acids  only,  without  a  trace  of  either 
aloetic  or  chrysammic  acid. 
In  most  of  the  reactions  of  aloin  and  its  chloro-  and  bromo-deriva- 
tives,  there  is  such  a  marked  parallel  with  those  of  the  orcins,  that  I 
think  it  worth  while  to  submit  them  to  a  further  examination. 
GLEANINGS  FROM  THE  EUROPEAN  JOURNALS. 
By  the  Editor. 
Non-existence  of  Igasuria. — This  alkaloid,  discovered  by  Desnoix, 
and  of  which  Schutzenberger  claimed  to  have  obtained  several  modi- 
fications, is  now  stated  to  be  identical  with  brucia.  Jorgensen  found 
that  the  igasuria  exhibited  by  Menier  at  the  last  Paris  Exposition, 
when  treated  with  periodide  of  potassium,  yielded  an  iodine  compound 
identical  in  composition  and  behavior  with  the  body  obtained  from 
brucia  under  the  same  conditions. —  Wittsteins  Vierteljahres  Schr.y 
1872,  275. 
Reactions  of  Quinia  and  Morphia. — Prof.  Fliickiger  finds  the  prac- 
tical limit  of  the  reaction  of  chlorine  water  and  ammonia  upon  quinia 
(green  coloration)  to  be  aqueous  solutions  containing  about  5^\q  alka- 
loid. The  brown  coloration  produced  by  the  same  reagents  with  mor- 
phia is  visible  in  solutions  of  uf6-Q  alkaloid,  while  the  iodic  acid  reac- 
tion is  observed  in  solutions  ten  times  weaker.  The  coloration  pro- 
duced with  morphia  dissolved  in  500  to  200  or  less  water  will  hide 
the  green  color  of  thalleiochin  ;  but  if  the  solution  contains  TJful}  mor- 
phia and  only  3^  quinia,  the  green  coloration  only  will  be  visible. 
In  a  mixture  of  quinia  and  morphia,-  the  reactions  of  either  alkaloid 
with  chlorine  and  ammonia  may  be  produced,  depending  mainly  upon 
the  amount  of  morphia  contained  in  the  solution. — iV".  Jahrb.  f. 
Pharm.,  1872,  March,  136—143. 
Yield  of  Opium  Plantations. — Jul.  Schrader  planted  32  square 
rods  with  poppy,  and  raised  3749  capsules  (117  to  the  square  rod), 
from  which  he  obtained  9f  oz.  well  dried  opium,  containing  11  per  ct. 
morphia;  each  capsule,  therefore,  yielded  1J  grain  opium.  One  (Ger- 
man) acre  would  yield,  accordingly,  112J  oz.  opium,  the  value  of 
17 
