Aseptember,bi89^'}    Recent  Literature  Relating  to  Pharmacy.  435 
Filtrate  from  R  precipitate  is  boiled  with  nitric  acid  and  tin-foil 
(to  remove  oxalates  and  phosphates  and  to  oxidize  the  iron)  and  is 
made  alkaline  with  ammonia  and  boiled. 
C.  — Precipitate  of  Fe.,  Al.  and  Cr. 
To  filtrate  from  C  is  added  cold  R. 
D.  — Precipitate  of  Co.,  Ni.,  Zn.  and  Mn. 
Filtrate  from  D  handled  as  usual  for  separation  of  alkaline  earths 
(ammonium  carbonate,  sodium  phosphate,  etc.). 
.  The  separation  of  Group  A  is  as  in  Sadtler  and  Trimble,  save  that 
Cd.  and  Co.  remain  in  last  ammonia  solution.  These  metals  are 
separated  by  neutralizing  with  hydrochloric  acid,  adding  potassium 
cyanide  and  precipitating  Cd.  from  this  solution  by  R.  The  Co.  in 
filtrate  is  separated  by  potassium  nitrite. 
Group  B  is  separated  from  its  solution  in  R  by  hydrochloric  acid. 
(a)  Precipitate  shaken  with  ammonium  carbonate.    As.  dissolves. 
(b)  Precipitate  treated  with  cold  R.    Cu.  dissolves. 
(c)  Precipitate  treated  with  hot  R.    Zn.  and  Sb.  dissolves. 
These  are  separated  as  in  Sadtler  and  Trimble. 
Group  £7  is  dissolved  in  hydrochloric  acid. 
(a)  Acid  solution  treated  with  potassium  hydrate.  Fe.  and  Cr. 
precipitated. 
Precipitate  fused  with  potassium  nitrate  and  sodium  carbonate 
and  treated  with  water.    Cr.  dissolves ;  Fe.  remains. 
(b)  Filtrate  from  "a"  neutralized  with  hydrochloric  acid  and 
cooked  with  ammonia.    Al.  precipitated. 
Group  D  is  warmed  with  5  per  cent,  hydrochloric  acid. 
(a)  Residue  Co.  and  Ni. 
Separated  as  in  Sadtler  and  Trimble,  or  with  potassium  nitrite. 
(b)  Acid  solution  treated  with  potassium  hydrate.  Mn.  precipi- 
tated. 
(c)  Filtrate  from  "b"  treated  with  R.    Zn.  precipitated. 
H.  V.  Arny. 
CONSTITUENTS  OF  CHEIRANTHUS. 
M.  Reeb  reports  {jf%  d.  Pharm.  von  Elsass-Loth.,  1898,  207)  a 
chemical  investigation  of  the  leaves  and  seeds  of  Cheiranthus  cheiri, 
a  common  crucifera  of  Europe,  sometimes  cultivated  and  closely 
allied  to  the  nasturtium. 
After  noting  that  Schlagdenhauffen  and  Reeb,  Sr.,  had  found  the 
