SOLUBILITY  OF  CAMPHOR  IN  WATER. 
195 
Granatensis,  distinguished  in  his  MS.  notes  as  var.  granatensis. 
Considering  the  present  state  of  our  knowledge  of  the  species 
of  Krameria,  Dr.  Triana's  determination  of  this  plant  as  a 
variety  of  Kr.  Ixina  appears  to  me  highly  judicious,  and  far 
safer  than  the  introduction  of  a  new  specific  name,  which  the 
receipt  of  further  specimens  would  probably  show  to  be  unten- 
able. I  therefore  accept  Krameria  Ixina  L.  var.  p.  granatensis 
of  Triana  as  the  plant,  the  dried  roots  of  which  constitute  the 
drug  known  as  Savanilla  Rhatany. 
This  form  of  Kr.  Ixina  has  an  extensive  geographical  range, 
for  besides  occurring  in  the  locality  already  mentioned,  it  exists 
in  Brazil,  where  it  was  collected  in  the  Island  of  Itamaraca, 
near  Pernambuco,  by  Gardner,  who  described  it  as  «  a  shrub 
about  three  feet  high  with  long  spreading  branches."  Another 
specimen  from  the  same  botanist  in  the  Hookerian  Herbarium, 
is  labelled  "  common  on  dry  hills  in  the  Sertlio  of  the  province 
of  Ceare'  London  Pharm.  Journal,  March  1,  1865. 
ON  THE  SOLUBILITY  OF  CAMPHOR  IN  WATER. 
By  Geo.  F.  H.  Markoe. 
"  What  is  the  proportion  of  camphor  present  in  the  officinal 
'Aqua  Camphorse  V  " 
To  prepare  camphor  water,  in  accordance  with  the  directions 
of  the  United  States  Pharmacopoeia,  we  take  of 
Camphor,  120  grains. 
Alcohol,  40  minims. 
Carbonate  of  Magnesia,  J  a  troyounce. 
Distilled  Water,  2  pints. 
Rub  the  camphor  first  with  alcohol,  then  with  carbonate  of 
magnesia,  and  lastly  with  the  water  gradually  added,  then 
filter  through  paper. 
All  the  authorities,  whose  works  are  at  my  command,  agree 
in  saying  that  camphor  is  soluble  in  1000  parts  of  cold  water. 
Storer,  in  his  "  Dictionary  of  the  Solubilities  of  Chemical 
Substances,"  states,  "From  an  intimate  mixture,  camphor  with 
carbonate  of  lime  or  carbonate  of  magnesia,  water  is  said  to 
take  up  three  times  as  much  camphor  as  when  shaken  with 
camphor  alone."    Storer  makes  no  mention  of  the  method  em- 
