Am.  Jour.  Pharm. 
May,  1877. 
Formulas. 
235 
Thus  prepared,  apomorphia  is  a  greyish  amorphous  powder,  which 
is  pretty  freely  soluble  in  water,  the  solution  rapidly  turning  green  in 
contact  with  air ;  its  solution  in  syrup,  kept  in  well  closed  vials, 
does  not  undergo  this  change.  It  is  distinguished  from  morphia  by  its 
complete  solubility  in  ether  and  benzol ;  it  is  reddened  by  nitric  acid, 
and  turns  brown  with  iodic  acid,  but  ferric  chloride  imparts  a  rose  (not 
a  blue)  color.    Composition,  C17H17N02. 
Monobromated  camphor  is  recommended  to  be  prepared  by  pour- 
ing upon  camphor  contained  in  a  retort  a  thin  stream  of  bromine  until 
the  camphor  is  liquefied,  heating  by  a  water  bath  until  bromhydric  acid 
ceases  to  be  given  off,  and  crystallizing  the  residue  from  boiling  alcohol. 
Cataplasm  of  Fucus  crispus. — A  sheet  of  carded  wadding  is 
evenly  spread  out,  a  concentrated  mucilaginous  infusion  of  Fucus  crispus 
(Irish  Moss)  poured  on  it,  and  th:s  covered  with  another  sheet  of  wadding 
of  the  same  size.  By  beating  lightly  with  a  brush,  the  jelly  is  made  to 
penetrate  the  wadding  very  evenly,  and  the  whole  is  exposed  to  the 
moderate  heat  of  a  drying  closet  until  the  water  has  been  expelled, 
when  it  resembles  a  sheet  of  thick  cotton  and  has  acquired  no  odor. 
When  intended  for  use,  sufficient  of  the  wadding  is  placed  in  a  large 
plate  and  moistened  with  nearly  boiling  water,  whereby  the  jelly  swells 
considerably,  the  saturated  solution  of  the  emollient  principles  of  the 
fucus  remaining  inclosed  in  the  wadding. 
Syrup  of  Chlorhydrophosphate  of  Calcium. — 12*50  grams  cal- 
cium phosphate  (prepared  by  precipitating  chloride  of  calcium  with 
phosphate  of  sodium)  are  diffused  in  340  grams  distilled  water,  and  just 
sufficient  (about  8  grams)  hydrochloric  acid  added  to  dissolve  the  cal- 
cium salt;  630  grms.  white  sugar  are  dissolved  in  the  liquid  without 
heat,  and  10  grms.  essence  of  lemon  mixed  with  the  strained  syrup. 
Syrup  of  lactophosphate  of  calcium  is  prepared,  like  the  preced- 
ing, from  12*50  grm.  calcium  phosphate,  sufficient  (about  14  grms.) 
cocentrated  lactic  acid,  340  grms.  distilled  water,  630  grms.  sugar,  and 
10  grms.  essence  of  lemon. 
Syrup  of  acid  phosphate  of  calcium  is  prepared  in  precisely  the 
same  manner,  only  substituting  for  the  acid  a  just  sufficient  quantity 
(about  18  grams)  of  phosphoric  acid,  sp.  grav.  1*45. 
The  solutions  corresponding  to  the  three  syrups  above  are  made  by 
employing  17  grams  of  the  calcium  phosphate,  increasing  the  cones- 
