CRYPTOPIA,  A  NEW  ALKALOID  IN  OPIUM. 
431 
Pseudo-morphia,  like  morphia  itself,  becomes  of  an  intense 
blue  with  salts  of  the  peroxide  of  iron,  particularly  with  the  per* 
chloride.  When  cryptopia  is  submitted  to  the  same  reaction,  it 
shows  no  change. 
Through  the  kindness  of  our  friend  Dr.  Cook,  Demonstrator  of 
Chemistry,  King's  College,  we  are  enabled  to  subjoin  the  fol* 
lowing  analytical  results 
ANALYSIS  OF  CRYPTOPIA. 
C  =  12.    0  =  16. 
The  alkaloid,  dried  first  under  the  air-pump  for  some  hoursj 
and  then  in  a  water-bath  kept  at  a  temperature  of  212°  F., 
lost  no  weight. 
I.  3-25  grs.,  burnt  with  oxide  of  copper,  with  a  layer  of  me- 
tallic copper  turnings  in  front,  gave  8*33  C02  and  1*98  H20, 
equal  to  70*00  per  cent.  C  and  6*77  per  cent.  II. 
II.  4*7  grs.,  burnt  in  the  same  manner,  gave  12*08  C02,  and 
2*88  H20,  equal  to  70*2  per  cent.  C  and  6*8  per  cent.  H. 
III.  5*32  grs.,  burnt  in  a  similar  manner,  gave  13*56  CO^ 
and  3*15  H20,  equal  to  69*5  per  Gent.  C  and  6'76  H. 
IV.  5*45  grs.  alkaloid,  when  burnt  with  soda-lime,  and  the 
ammonia  absorbed  by  standard  acid,  which  contained  20*96  grs* 
S03  per  1000  fluid  measures,  were  found  to  have  neutralized  an 
amount  of  acid  equal  to  28  measures  ss=  -2054  N  =  3*77  per 
cent.  N. 
Y.  5*9  grs.,  treated  in  a  similar  manner,  were  found  to  have 
neutralized  acid  equal  to  30  measures  =  *22  N  ±=z  3*73  per  ct.  1SL 
The  above  figures  indicate  the  formula  (C23H2r)N05). 
Theory.  Experiments. 
r 
Eq.  Per  ct.  I.         II.         III.       IV.  V, 
C23    276  70*00  70-00     70-20  69*5 
H25     25  6*33  6*77      6*8  6*76 
N       14  3*50  3*77  3*73 
Or      80  20*17 
395  100*00 
[The  chlorides  and  platinum  salt  have  the  following  composition  \ 
Bichloride,  C23H25N  05,2II  CI  +-  6H2Q. 
