352  Gleanings  from  the  Oerman  Journals.  {^Aug.T.mr*'' 
Place  the  sulphate  of  iron,  sulphite  of  soda,  and  dilute  sulphuric 
acid  in  a  chemical  flask,  with  one  and  a  half  fluidounces  of  the  sjrup, 
previously  heated  to  near  the  boiling  point,  and  continue  the  heat 
until  solution  is  effected.  Place  the  chloride  of  barium,  remainder  of 
sjrup,  and  the  water  in  another  chemical  flask,  and  apply  heat  until 
solution  is  eff"ccted.  Now  pour  the  two  solutions  together,  mix  thor- 
oughly by  agitation  for  a  few  minutes,  and  throw  the  whole  upon  a 
paper  filter  in  a  glass  funnel,  arranged  in  such  a  manner  that  it  may 
be  kept  hot.  When  the  ferrous  chloride  has  filtered  through,  test  a 
small  quantity  with  a  drop  of  solution  of  ferrous  sulphate ;  if  a  white 
precipitate  occurs,  a  few  more  grains  of  sulphate  of  iron  must  be  added 
and  refiltered  ;  then  add  the  hydrochloric  acid  and  fill  into  four-ounce 
vials  for  further  use. 
This  syrup  contains  the  same  amount  of  metallic  iron,  minim  for 
minim,  of  the  tinct.  ferri  chloridi,  U.  S.  P. 
Tinctura  Cinchonce  et  Ferri  Chloridi  Saccharata. 
Tincturae  Cinchonas  Sacch.,     .  .  .  Oj. 
Syr.  Ferrous  Chloride,  .  .      minims  160. 
Acid  Hydrochloric,     .  .  .  160. 
This  contains  120  grains  of  red  bark  and  10  drops  of  syr.  ferrous 
chloride  to  each  fluidounce.  If  it  be  desirable  to  mix  in  any  other 
proportion,  add  one  measure  of  hydrochloric  acid  for  each  measure 
of  syr.  ferrous  chloride.  This  is  a  deep  red,  clear  tincture,  rather 
pleasantly  bitter ;  if  any  doubt  exists  as  to  whether  it  has  blackened, 
add  dilute  alcohol  to  a  small  quantity,  until  it  becomes  transparent 
enough  to  observe  it  thoroughly. 
New  York,  July  18,  1871. 
GLEANINGS  FROM  THE  GERMAN  JOURNALS. 
By  John  M.  Maisch. 
The  Oil  of  G-rapeseed  has  been  analyzed  by  A.  Fitz.  It  consists 
of  the  glycerin  compound  of  palmitic,  stearic,  erucic  and  another 
acid  or  acids,  yielding  soft  semiliquid  salts  with  barium  and  lead. 
The  two  first  named  acids  are  present  in  very  small  proportion  ;  eru- 
cic acid  constitutes  about  one-half  of  the  acid  mixture,  Grapeseed 
contain  15  to  18  per  cent,  of  fixed  oil,  and  5  to  6  per  cent,  tannin ; 
