22 
Saudal-zvood  and  Cedar  Oils. 
( Am.  .Jour.  Pharm. 
I        Jan.,  1893. 
TABIvE  II.— Physical  and  Chemical  Tests. 
Number  of  Sample. 
2, 
3, 
4, 
5, 
6, 
7, 
8, 
9, 
10, 
«■ 
>> 
'> 
cd 
O 
3, 
CD 
Rotation  in  200 
mm.  Column. 
Spirit  Test. 
Bromine  Ab- 
sorbed. Per 
Cent. 
KHO  Required 
for  Saponi- 
fication. Per 
-9?6-5 
-  37°  40' 
No 
II2-0 
0-44 
turbidity. 
o-8o 
975 '9 
II2-I 
978-4 
III-8 
972 
-470 
8-o  cc. 
I30-0 
0-63 
963-0 
+  20° 
5'7  cc. 
1497 
2-17 
967 '5 
+  53° 
8-4  cc. 
109-0 
0-42 
952-0 
+   8°  50' 
i5'o  cc. 
1317 
079 
967-0 
+  25°  20' 
3-05  cc. 
123-8 
950-0 
+  15°  50' 
C25  cc. 
95 -o 
r89 
945  "4 
+   5°  10' 
0  40  cc. 
126^ 
0-98 
967*4 
+  190  40' 
0-65  cc. 
gi-8 
3-6i 
970-0 
+  8°  50' 
2  20  cc. 
121*2 
i"05 
(1)  Specific  Gravity. — In  common  with  other  observers,  I  find  the 
sp.  gr.  of  the  genuine  sandal-wood  oil  to  be  considerably  higher 
than  that  of  either  cedar  oil  or  the  West  Indian  or  West  Australian 
oils,  although  cedar  oil  varies  very  much  in  this  respect,  one  sample 
approaching  that  of  the  genuine  oil. 
(2)  Rotation  of  Polarized  Light. — True  sandal-wood  oil  possesses  a 
—  rotation,  whereas  the  West  Indian  and  West  Australian  oils 
rotate  to  the  right,  and  cedar  oil  usually  so,  although  the  sample 
with  high  sp.  gr.  is  left-handed.  This  fact  has  also  been  already 
noted  in  Messrs.  Schimmel's  report  for  April,  1891. 
(3)  Solubility  in  Spirit. — By  the  "spirit  test"  a  marked  difference 
is  observed,  corresponding  with  the  results  published  by  Mr.  E.  M. 
Holmes,  in  the  Pharm.  Joum.  [3],  xvi,  p.  822,  all  the  varieties  of 
sandal-wood  oil  being  much  more  soluble  than  cedar  oil.  I  find 
that  the  English  distilled  oil  from  East  Indian  sandal-wood  dissolves 
readily  in  a  mixture  of  4  fluid  parts  of  rectified  spirit  with  1  of  dis- 
tilled water,  but  the  Macassar  oil  requires  a  large  proportion  of  this 
mixture ;  this  latter,  however,  forms  a  clear  solution  with  five  times 
its  volume  of  a  mixture  of  rectified  spirit  5  fluid  parts,  distilled 
water  I  fluid  part. 
(4)  Bromine  Absorbed. — The  bromine  absorption  gives  no  dis- 
tinctive indications  on  account  of  the  great  variability  of  those  of 
cedar  oil;  it  may,  however,  be  noted  that  the  three  new  samples  of 
the  genuine  oil  exhibit  a  remarkable  uniformity  in  this  respect. 
(5)  Saponification. — The  KHO  required  for  saponification  of  cedar 
