'""•j^ner.8''8o"'"-}  .  CherYj  LauTel.  301 
time.  I  think,  too,  that  by  this  plan  many  other  ointments  and  cerates 
could  be  kept.     I  shall  try  it  with  Goulard's  cerate. 
A  Close  Imitation  of  Curacoa  Cordial. — I  have  devised  the  follovv^ing 
and  found  it  a  very  good  substitute  for  the  imported  curacoa  : 
R     Fresh  oil  of  orange  peel, 
"        "     lemon  peel, 
Oil  of  aniseed, 
"  cloves, 
"     cinnamon  (Ceylon), 
Alcohol, 
Simple  syrup. 
Orange  flower  water. 
Extract  of  fresh  orange  peel. 
10  drops 
6 
5  fluidounces  and  2  drachms 
7 
2  fluid  rachms 
I  " 
Water,    ...  2  fluidounces  2  " 
Dissolve  the  oils  in  the  alcohol,  add  the  extract  of  orange  peel,  thera 
the  syrup,  agitate  for  10  or  15  minutes,  and  after  the  water  is  poured 
into  the  rnixture  shake  well.  After  standing  for  an  hour  filter,  after 
having  previously  mixed  the  cordial  with  2  drachms  of  carbonate  of 
magnesia  in  powder. 
This  produces  a  fine  flavoring  cordial,  having  a  close  resemblance  ta 
the  genuine  curacoa,  and  miscible  with  water  without  becoming  turbid. 
This  makes  the  white  curacoa,  and  in  order  to  make  the  colored  all  that 
is  necessary  is  to  add  sufficient  caramel  to  produce  the  desired  tint. 
EFFECT  OF  INTENSE  COLD  ON  CHERRY-LAUREL. 
By  Professor  Fluckiger. 
In  January,  1879,  1  submitted  cherry  laurel  leaves,  which  were 
covered  with  ice,  to  distillation  with  water,  and  ascertained  that  they 
nevertheless  yielded  a  small  amount  both  of  essential  oil  and  hydro- 
cyanic acid.  This  experiment  is  recorded  in  the  new  edition  of  the 
Pharmacographia,"  page  256,  yet  it  should  be  added  that  the  leaves^ 
although  frozen,  were  still  green  and  were  not  killed  by  the  frost,  the 
temperature  being  not  below  — io°C.  (i4°F.).  In  the  month  of 
December,  1879,  as  well  as  in  the  beginning  of  the  present  year,  how 
ever,  we  noticed  repeatedly,  at  Strassburg,  temperatures  of  — ■25°C. 
( — I3°F.),  and  then  the  cherry-laurel  leaves  turned  brownish,  lost  their 
leathery  texture  and  were  in  fact  killed.  Some  of  them,  distilled  with 
water,  yielded  an  aromatic  aqueous  product  which  proved  devoid  of 
hydrocyanic  acid.  On  repeating  this  experiment  with  one  pound  of 
the  frozen  leaves  the  same  negative  result  was  obtained,  and  the  same 
again  when  two  pounds  of  leaves  were  submitted  to  distillation.  In 
