ON  SYRUP  OF  CHLOROFORM. 
445 
I  have  succeeded  in  making  such  a  mixture  by  reducing  the 
specific  gravity  of  the  chloroform  by  means  of  ether,  and 
shaking  them  with  a  definite  amount  of  syrup.  The  chloro- 
form manifests  no  tendency  to  separation,  even  when  present 
in  the  proportion  of  one-eighth;  but  a  better  form  is  that  con- 
taining one-twelfth. 
The  modus  operandi  is  as  follows : — Put  into  a  twelve  ounce 
bottle  one  ounce  of  chloroform  and  about  three  drachms  of 
ether ;  to  the  mixture  add  the  same  volume  of  the  syrup  to  be 
employed  ;  observe  carefully  the  disposition  of  the  fluids,  the 
chloroform  and  ether  will  probably  sink,  then  add  guttatim 
more  ether  until  the  two  liquids,  on  being  shaken  together, 
appear  indifferent  as  to  their  position  in  the  system ;  finally  fill 
up  the  bottle  with  the  syrup,  and  shake  well  for  a  minute  or 
two. 
The  syrup  should  not  be  too  dense,  or  it  will  be  difficult  to 
impart  to  it  sufficient  agitation  to  ensure  the  complete  commix- 
ture of  the  fluids.  The  syrup  should  be  composed  of  gum  and 
sugar,  of  honey  or  treacle ;  syrup  of  sugar  does  not  answer  well, 
apparently  on  account  of  lacking  viscosity. 
The  syrup  thus  formed  has  the  same  physical  properties  as 
chlorodyne,  and,  like  it,  is  readily  miscible  with  water  in  any 
reasonable  proportion  (one  to  seven),  and  soluble  in  the  water 
where  the  proportion  of  chloroform  is  within  the  limits  of  its 
solubility. 
The  advantages  attending  its  use  are  these : — 1st.  It  does 
not  need  special  precaution  when  being  added  to  watery  fluids, 
it  being  at  once  diffused  completely,  and  in  no  case  does  it  give 
rise  to  a  deposition  of  large  globules  of  chloroform.  2d.  When 
added  in  excess  of  saturation,  the  undissolved  chloroform  is  de- 
posited in  very  minute  globules,  which,  after  lying  together  for 
days,  show  no  disposition  to  combine,  but  may  by  a  few  shakes 
be  dispersed  evenly  through  the  liquid,  forming  an  emulsion 
sufficiently  permanent  to  enable  a  dose  to  be  measured  without 
difficulty. 
I  will  conclude  by  proposing  the  following  form  for  an  ano- 
dyne containing  chloroform  (founded  on  one  published  by  Dr. 
