ON  OTTO  OF  ROSE. 
333 
occurs  to  the  druggist  in  the  purchase  of  Otto  of  Rose.  The 
■wholesale  price  of  the  article  varies  from  14s.  to  26s.  per  ounce, 
a  fact  indicative  of  a  wide  range  of  qualities.  But  assuming 
that  the  most  expensive  article  is  the  purest,  it  will  be  found  to 
differ  materially  from  the  Otto  described  by  our  best  authors. 
Pereira  states*  that  at  temperatures  below  80°  F.,  Attar  of  Roses 
is  a  crystalline  solid ;  and  the  same  assertion  is  made  by  Dr. 
Boyle. f  Brande  statesj  that  it  melts  at  84°  ;  Redwood,  that  it 
fuses  between  84°  and  86°.§  Martiny  gives  86Q  as  its  fusing 
point. ||  Chevallier,  Richard,  and  Guillemin  say  that  it  is  con- 
crete below  84°  to  86°. If  Dr.  Jackson  states,  of  the  Otto  made 
at  Ghazeepore,  that  it  melts  at  84°.** 
Yet  the  Otto  of  the  London  market,  as  all  druggists  know,  is 
never  found  with  so  high  a  fusing  point,  and  in  fact,  there  is  but 
a  portion  of  that  which  arrives,  of  which  one  could  say  that  it  is 
solid  above  60°  F. 
These  discrepant  facts  have  long  engaged  my  attention,  and 
believing  that  the  general  subject  of  Otto  of  Rose  merits  the  no- 
tice of  pharmaceutists,  I  have  placed  on  paper  the  observations 
which  I  have  collected,  and  have  now  the  honor  of  laying  them 
before  the  Pharmaceutical  Society. 
For  convenience,  I  think  it  best  to  discuss  the  subject  under 
three  heads,  namely,  Production,  Adulteration,  and  Chemical 
Characters.    First,  then,  the 
Production  of  Otto  of  Rose. 
The  Otto  of  Rose  with  which  at  the  present  day  the  English 
market  is  supplied,  is  produced  in  Turkey,  on  the  plains  lying 
south  of  the  Balkan  Mountains. 
Otto  of  Rose  is  also  collected  in  Provence,  in  the  South  of 
France,  by  the  distillers  of  Rose  Water,  and  this  Otto,  the  pro- 
duction of  which  is  very  limited,  realizes  a  high  price.    In  the 
*  Elements  of  Mat.  Med.  Ed.  8,  vol.  ii.,  p.  1812.  t  Manual  of  Mat.  Med. 
Ed.  2,  p.  432.  %  Manual  of  Chemistry.  Ed.  6,  p.  1551.  \  Supplement  to 
the  Pharm.  Ed.  3,  p.  861.  ||  Encyklop.  d.  Med.-Pharm.  Nat.-und  Rohwaa- 
renk.  Bd.ii.,  p.  389.  \  Diet,  des  Drog.  t.  iii.  p.  158.  **  O'Shaughnessy's 
Bengal  Dispensatory  (p.  328),  in  which  work  Dr.  Jackson's  interesting  account 
is  given  at  length. 
