64  PraGtical  Notes  from  Foreign  Journals.     { '^'Ver'^i882*'^°*" 
Soluble  Cacao,  Avhich  was  first  prepared  in  Holland,  and  is  known 
as  Dutch  cacao,  is  prepared  from  the  seed,  deprived  of  fat  by  pressure, 
by  digesting  the  press  cake  with  sodium  or  potassium  carbonate,  which 
treatment  renders  cellulose,  starch  and  albuminoids  more  readily 
soluble  in  water.  Otto  Rueger  prepares  also  soluble  cacao  mass  which 
contains  all  the  oil ;  the  latter  is  first  removed  by  pressure,  the  residue 
is  treated  as  stated  above  and  the  fat  is  afterwards  added  again.  Thus 
prepared  it  contains  a  somewhat  larger  percentage  of  ash,  but  yields  a 
palatable  beverage  simply  by  stirring  with  hot  water,  Avithout  boiling. 
This  mass  was  found  to  contain  cacao-butter  47*73,  nitrogenated  com- 
pounds 12*3,  ash  5*4,  and  in  the  latter  alkaline  carbonates  2'25  per 
cent.  Cacao  powder,  similarly  prepared,  contained  fat  30*45,  nitro- 
genated compounds  19*94,  ash  6*1,  with  alkaline  carbonates  2*78  per 
cent.— P/iar.  Centralhalle,  Nov.  17,  1881,  p.  509. 
Coating  for'  Blackhoai'ds. — 1.  Sandarac  300,  shellac  300,  lampblack 
200,  ultramarin  30,  ether  10  grams,  96  per  cent,  alcohol  4  liters.  H. 
Schoeneweg. 
2.  Shellac  200,  camphor  80,  lampblack  90,  ether  800,  alcohol  1,000 
grams.    C.  Welcker. — Phar.  Zeitung,  1881,  No.  72. 
Mel  Rosce. — E.  Langlet  recommends  the  following  process :  100 
grams  of  bruised  red  rose  leaves  are  macerated  for  three  hours  with  a 
mixture  of  water  160,  alcohol  20  and  ether  20  grams.  The  liquid  is 
expressed,  and  preserved  in  a  cool  place.  An  infusion  is  now  made  of 
the  rose  leaves  with  600  grams  of  boiling  water,  strained,  clarified 
with  white  of  egg,  evaporated  at  a  low  temperature  to  150  grams,  and 
mixed  with  600  grams  of  good  and  thick  honey.  The  mixture  is 
heated  to  the  boiling  point,  the  ethereal  liquid  is  added  in  small  por- 
tions, and  the  heat  continued,  without  boiling,  until  the  ether  has  been 
expelled;  the  honey  is  cooled,' and  filtered  through  paper. — Rep.de 
Phar.,  1881,  p.  405. 
Medicated  Soaps. — The  following  formulas  are  published  in  '^Phar, 
Centralhalle,''  Dec.  15,  from    Seifenfabrikant,"  1881,  No.  23: 
Tannin  Soap. — Cocoanut  oil  9  kilos  is  saponified  with  soda  lye  4*5 
kilos;  250  grams  tannin  dissolved  in  alcohol  are  then  added,  and  finally 
the  perfume  consisting  of  Peru  balsam  30  grams,  oil  of  cassia  and  oil 
of  cloves  of  each  10  grams. 
Iodine  Soap. — Cocoanut  oil  10  kilos,  lye  of  38  °B.  5  kilos  and  potas- 
sium iodide  500  grams  dissolved  in  250  grams  water. 
Gall  Soap. — 1*5  kilo  of  gall  is  mixed  with  25  kilos  of  cocoanut  oil, 
