AmMa°rch^897!m'}  Acetic  Acid  as  a  Menstruum  and  Solvent.  125 
60  c  c.  alcohol  and  40  c.c.  water,  left  a  residue  of  0-232  gm.  The 
liquid  was  clear. 
No.  29. — 2  gm.  extract  nux  vomica,  treated  with  a  menstruum  of 
55  c.c.  alcohol  and  45  c.c.  water,  left  a  residue  of  0-31  gm.  The 
liquid  was  clear,  a  slight  precipitate  settling  after  filtration. 
No.  30. — 2  gm.  extract  nux  vomica,  treated  with  a  menstruum  of 
50  c.c.  alcohol  and  50  c.c.  water,  left  a  residue  of  0-316  gm.  The 
liquid  was  not  quite  clear,  a  slight  precipitate  settling  after 
filtration. 
No.  31. — 2  gm.  extract  nux  vomica,  treated  with  a  menstruum  of 
45  c.c.  alcohol  and  55  c.c.  water,  left  a  residue  of  0-31  gm.  The 
liquid  was  not  clear,  a  precipitate  settling. 
No.  32. — 2  gm.  extract  nux  vomica,  treated  with  a  menstruum  of 
45  c.c.  alcohol  and  60  c.c.  water,  left  a  residue  of  0-342  gm.  The 
liquid  was  cloudy,  a  very  slight  precipitate  after  filtration. 
No.  33. — 2  gm.  extract  nux  vomica,  treated  with  a  menstruum  of 
35  c.c.  alcohol  and  65  c.c.  water,  left  a  residue  of  040  gm.  The 
liquid  was  cloudy. 
No.  34. — 2  gm.  extract  nux  vomica,  treated  with  a  menstruum  of 
30  c.c.  alcohol  and  70  c.c.  water,  left  a  residue  of  0  430  gm.  The 
liquid  was  cloudy. 
No.  35. — 2  gm.  extract  nux  vomica,  treated  with  a  menstruum  of 
25  c.c.  alcohol  and  75  c.c.  water,  left  a  residue  of  0-40  gm.  The 
liquid  was  cloudy. 
No.  36. — 2  gm.  extract  nux  vomica,  treated  with  a  menstruum  of 
20  c.c.  alcohol  and  80  c.c.  water,  left  a  residue  of  0  372  gm.  The 
liquid  was  cloudy. 
No.  37. — 2  gm.  extract  nux  vomica,  treated  with  a  menstruum  of 
15  c.c.  alcohol  and  85  c.c.  water,  left  a  residue  of  0-420  gm.  The 
liquid  was  cloudy. 
No.  38. — 2  gm.  extract  nux  vomica,  treated  with  a  menstruum  of 
10  c.c.  alcohol  and  90  c.c.  water.  The  residue  not  weighed.  The 
liquid  was  not  clear. 
No.  39. — 2  gm.  extract  nux  vomica,  dissolved  in  100  c.c.  water, 
left  residue  040  gm.  The  liquid  was  muddy,  and,  upon  stand- 
ing, showed  evidence  of  decomposition. 
No.  40. — 2  gm.  extract  nux  vomica,  dissolved  in  100  c.c.  diluted 
acetic  acid.    The  liquid  was  a  clear,  light  amber  color. 
No.  41. — 2-4  gm.  extract  nux  vomica,  dissolved  in  2,400  c.c. 
