AROMATIC  SYRUP  OF  RHUBARB. 
329 
FLUID  EXTRACT  OF  POLYTRICHUM  JUNIPERINUM. 
By  Gustayus  Dohme. 
Take  of  Polytrich.  Juniper,  in  powder,        .  ^viij. 
Alcohol,  q.  s. 
Diluted  Alcohol  q.  s.  (water  3  parts,  alcohol  13  p.) 
Mix  the  Polytrichum  juniperinum  in  fine  powder  with  6  ounces 
of  alcohol — pack  it  firmly  in  a  percolator,  and  having  placed 
over  the  surface  a  disk  of  cloth,  gradually  add  alcohol  until 
twelve  ounces  of  tincture  have  passed  ;  set  it  aside  in  a  warm 
place  till  reduced  to  six  ounces  ;  continue  the  percolation  with 
diluted  alcohol  (alcohol  13  parts,  water  3  parts)  until  the  liquid 
passes  tasteless.  Evaporate  the  tincture  thus  obtained  over  a 
water-bath  to  one  ounce,  adding  to  it  one  ounce  of  alcohol  to 
redissolve  the  resinous  matter,  and  mix  with  the  concentrated 
reserved  tincture,  and  filter  if  necessary. 
As  Polytrichum  juniperinum  is  of  a  spongy,  bulky  nature, 
which  makes  tight  packing  for  the  process  of  percolation  very 
difficult,  I  found  it  to  answer  a  good  purpose  to  first  pack  it 
with  the  hand  as  tight  as  possible  ;  then  place  over  it  a  perfo- 
rated tin  and  a  sufficient  weight  to  allow  the  percolation  to  go  on 
slowly.  In  following  this  precaution  I  was  able  to  exhaust  the 
mass  with  less  menstruum  than  in  percolating  it  without  pres- 
sure. 
The  fluid  extract  made  by  the  above  process  has  a  dark  green 
color  and  strong  odor  characteristic  of  the  herb  and  represent- 
ing  it,  drachm  for  drachm  Journal  and  Trans.  Md.  Col. 
Pharm.  June,  1860. 
AN  IMPROVED  FORMULA  FOR  AROMATIC  SYRUP  OF  RHUBARB 
By  Wm.  S.  Thompson. 
Take  of  Rhubarb  in  coarse  powder  (No.  40)  three  ounces. 
Cinnamon,  in  powder,       (No.  50) 
Cloves        «      »  «  of  each  half  an  ounce. 
Nutmeg      «      «  «   two  drachms. 
Diluted  Alcohol,  .  .  a  sufficient  quantity. 
Sugar,  refined,    .       .       .       seven  pounds. 
