AmM°ay?iS16arm-}  Oil  of  Sandal  Wood.  261 
It  will  be  observed  that  with  the  exception  of  No.  5  all  the  speci- 
mens were  of  higher  specific  gravity  than  that  recognized  in  the  new 
British  Pharmacopoeia,  0*96,  although  lower  than  a  sample  obtained 
from  the  India  Museum,  and  which  had  a  specific  gravity  of  "9901. 
The  Pharmacopoeia  of  India  gives  the  specific  gravity  as  '980,  and 
the  United  States  Pharmacopoeia  '946.  It  is  probable,  therefore, 
that  none  of  the  samples  examined  by  Mr.  Ince  could  have  been 
adulterated  with  cedar  wood  oil,  since,  the  addition  of  that  oil  (of 
specific  gravity  "9480)  would  have  lowered  the  density.  The  low 
specific  gravity  given  in  the  United  States  Pharmacopoeia  indicates, 
however,  the  possibility  of  the  West  Indian  oil  being  used  exten- 
sively in  that  country.  This  supposition  agrees  with  the  information 
I  have  received  from  distillers  of  the  oil,  that  this  oil  is  chiefly  ex- 
ported to  the  United  States.  Mr.  T.  Farries  also  informs  me  that  it 
has  very  little  sale  either  in  this  country  or  in  Australia. 
The  oil  of  cedar  wood  obtainable  in  commerce  is  even  more  free 
from  color  than  sandal  wood  oil,  and  if  prepared,  as  I  am  informed, 
from  the  refuse  of  cedar  pencil  works,  is  probably  rectified  carefully 
to  free  it  from  color,  since  the  oil  distilled  from  a  closely  allied 
species,  J.  Bermudiana,  in  Jamaica,  by  M.  Bowrey,  judging  from  a 
specimen  recently  presented  by  him  to  the  Museum  of  this  Society, 
has  a  reddish  brown  color.  A  sample  of  oil  of  cedar  obtained  in 
English  commerce  has  been,  at  my  request,  examined  in  the  Society's 
laboratory  by  Mr.  W.  H.  Ince,  who  finds  that  it  has  a  specific  gravity 
of  *9480,  and  treated  with  various  reagents  presents,  as  compared 
with  a  sample  of  East  Indian  oil  of  sandal  wood  of  specific  gravity 
'9901,  received  from  the  late  East  India  Museum,  the  following 
characters  : — 
Cedar  oil.  Sandal  wood  oil. 
Concentrated  sulphuric  acid.... Burnt  sienna  color.       Brown  with  black  clots. 
Chromic  acid  Brown  with  black  clots.  Ditto. 
Mtric  acid  ,  .Brown  color.  Brown  color. 
Concentrated  solution  of  chlo-  \ 
ride  of  zinc   ,..  /  No  result<  Makes  it  gela'mous. 
Solution  of  bromine  in  chlo- j  Nq  No  regult< 
roform  ) 
Mercuric  chloride  No  result.  No  result. 
Hydrochloric  acid  No  result.  No  result. 
The  specific  gravity  of  oil  of  cedar  wood  being  considerably  lower 
than  that  of  sandal  wood,  it  occurred  to  me  that  it  would  be  impor- 
