AmMa°y,r i8P79arm' }  Codliver  Oil  Emulsion.  259 
to  ten  pounds  of  sugar,  this  latter  to  be  dissolved  by  gentle  heat  in  the 
percolate,  after  filtration. — Pacific  Med.  and  Surg.  Jour.,  March. 
Knigbfs  Landings  Yolo,  Co. 
CODLIVER  OIL  EMULSION. 
By  William  Gilmour. 
Codliver  oil  emulsions  in  various  forms  are  peparations  which  have 
of  late  become  somewhat  popular.  I  express  no  opinion  whatever  on 
any  of  these  preparations,  far  less  do  I  intend  to  individualize  any  prep- 
aration by  attempting  to  give  a  copy  of  the  formula.  I  simply  recog- 
nize the  unfortunate  necessity  which  sometimes  arises  of  following 
where  our  inclination  does  not  lead,  and  I  therefore  give  a  formula  for 
an  emulsion,  believing  it  without  prejudice  equal  to  any  of  the  many 
now  bulking  so  largely  before  the  profession  and  the  public. 
Of  all  the  excipients  suggested  by  different  authorities,  as  well  as 
commending  themselves  to  one's  own  approval  for  emulsifying  codliver 
oil,  none,  I  think,  equals  gum  tragacanth.  Without,  therefore,  ignor- 
ing other  substances,  such  as  mucilage  of  gum  arabic,  white  of  egg, 
alkaline  solutions,  and  so  on,  I  have  principally  endeavored  to  ascertain 
the  conditions  most  favorable  to  produce  with  tragacanth  an  insepara- 
ble emulsion,  which  at  the  same  time  would  be  miscible  with  water, 
contain  a  reasonable  amount  of  oil,  and  be  not  particularly  objection- 
able in  appearance,  taste  or  smell.  Of  course  in  all  these  preparations 
much  may  be  left  to  individual  fancy  as  to  combination,  and  I  therefore 
make  no  suggestion  as  to  all  the  different  ingredients  which  may  be 
u  hotched  potched "  into  it  further  than  this,  that  if  oil  of  bitter 
almonds  be  the  flavoring  agent  employed,  the  emulsion  need  not  be  spoiled 
by  the  addition  of  an  extravagant  excess  of  the  bitter  almond.  Expe- 
rience and  experiment  both  have  determined  that  a  half  per  cent.,  or 
about  two  drops  to  each  ounce  of  codliver  oil  employed,  is  the  proper 
proportion,  and  that  of  the  two  oils,  namely,  an  oil  deprived  of  its 
hydrocyanic  acid,  or  an  oil  containing  it,  the  latter  is  much  preferred. 
As  to  the  emulsion,  let  three  drachms  of  the  finest  white  powder  of 
tragacanth  be  rubbed  up  in  a  large  mortar  with  three  ounces  of  glycerin. 
To  this  add  as  much  boiling  water  as  will  convert  it  into  a  thick, 
transparent  jelly,  from  eight  to  ten  ounces  probably  being  required. 
After  cooling  add  the  codliver  oil,  which  should  first  be  mixed  either 
