no 
Notes  on  Syrups. 
/  A.m.  Jour.  Pharm. 
I      March,  1903. 
through  the  filter  to  measure  500  c.c.  To  this'  liquid  add  100  c.c. 
of  glycerin,  and  dissolve  in  it  700  grammes  of  sugar. 
The  volume  of  the  filtrate — qoo  c.c. — is  excessive,  and  should  be 
reduced  to  450  c.c.,  when  a  syrup  can  be  prepared,  the  finished  vol- 
ume of  which  will  not  be  in  excess  of  the  official  limit. 
SYRUP  OF  WILD  CHERRY. 
A  number  of  specimens  of  syrup  of  wild  cherry,  which  were  pre- 
pared in  the  latter  part  of  1899,  and  the  early  months  of  1900, 
were  recently  examined  as  to  their  state  of  preservation. 
As  some  were  made  with  menstrua  containing  various  percent- 
ages of  acetic  acid  and  glycerin,  a  comparison  with  syrups  contain- 
ing no  acetic  acid  was  deemed  of  possible  interest. 
The  infusions,  from  which  the  syrups  were  prepared,  were  also 
preserved  and  show,  as  may  be  expected,  various  forms  of  decom- 
position. 
All  syrups,  in  the  preparation  of  which  an  acetic  acid  menstruum 
was  employed,  contained  a  reddish  precipitate.  A  specimen,  pre- 
pared with  a  menstruum  of  I  per  cent,  acetic  acid  and  5  per  cent,  of 
glycerin  contained  a  heavy  red-brown  deposit,  which  is  also  the  case, 
although  to  a  less  degree,  in  a  syrup  containing  10  per  cent,  of 
glycerin. 
Syrups  containing  2  and  3  per  cent,  of  acetic  acid  and  10  per 
cent,  of  glycerin  in  the  extracting  menstruum  show  the  greatest 
stability. 
A  syrup  which  was  prepared  with  diluted  acetic  acid,  without 
any  glycerin,  was  found  to  be  an  unsightly  preparation. 
All  syrups  containing  acetic  acid  possessed  a  peculiar  odor. 
Three  specimens  of  the  syrup,  prepared  without  acetic  acid  and 
containing  respectively  5,  10  and  15  per  cent,  of  glycerin,  the  latter 
the  official  amount,  were  found  in  a  good  state  of  preservation. 
The  5  per  cent,  syrup  was  found  to  have  a  red  deposit,  while  in  the 
others  precipitation  was  slight. 
This  would'  indicate  that  glycerin  is  necessary  as  a  preservative 
of  wild  cherry  syrup ;  that  it  must  be  a  part  of  the  percolating 
menstruum  and  that  the  amount  should  be  at  least  10  per  cent,  of 
the  syrup. 
