'■}     Oil  of  Sandalwood,  Lavender  and  Thyme.  227 
NO. 
Kind. 
Specific  Gravity 
at  150  C. 
Solubility  in 
80  Per  Cent.  Alcohol. 
Per  Cent,  of 
Plicnol  Bodies. 
Optical 
Rotation . 
I 
White 
0.877 
Insol.  in  20  volumes 
2-55 
2 
o-83i 
'20  " 
4*26 
3 
» 
0-863 
<<  < 
'  10  " 
None 
— 
4 
0-8964 
Sol. 
'    2  " 
4' 
-  3°  48' 
5 
<< 
0-8935 
Insol.  ' 
10  " 
27- 
-3°  48' 
6 
Red 
0*907 
Sol.  ' 
'    2  " 
25'56 
-  i°  24' 
7 
o'88o 
Insol." ' 
'10  " 
8-73 
8 
0-893 
1  10 
18-81 
—  i°  6' 
9 
«< 
0-916 
Sol. 
1    1%  " 
30-16 
—  2° 
10 
0-9231 
Insol.  ' 
10  " 
19-00 
11 
0.9084 
Sol. 
'    2  " 
14' 
+  1°  48' 
12 
.0-9074 
2  " 
24- 
—  1°  30' 
No.  10  was  an  extremely  muddy  looking  oil.  While  attempting 
to  estimate  the  per  cent,  of  phenol  bodies  in  No.  3,  it  was  noticed 
that  the  volume  of  the  oil  increased  by  2  per  cent,  rather  than  de- 
creased. When  M  white  thyme  "  is  called  for,  almost  anything  must 
be  expected.  The  data  for  Nos.  4  and  5  are  so  different  from  any 
ever  examined  that  strange  queries  arise  in  one's  mind.  No.  5, 
27  per  cent,  phenol  bodies,  yet  insoluble  in  ten  volumes  of  80  per 
cent,  alcohol;  contrast  with  this  the  corresponding  data  of  No.  4, 
and  observe  that  the  gravities  and  optical  rotations  are  practically 
the  same.    How  can  this  be  harmonized? 
Of  the  red  oils  Nos.  6,  8  and  12  can  be  considered  genuine,  but 
8  and  10  must  be  rejected  with  reserve. 
The  per  cent,  of  phenol  bodies  was  estimated  by  partially  filling  a 
100  c.c.  nitrometer  with  a  5  per  cent,  solution  of  sodium  hydrate, 
then  introducing  10  c.c.  of  the  oil  to  be  examined,  shaking  well  for 
five  minutes,  and  finally  setting  aside  for  twenty-four  hours.  The 
drops  adhering  to  the  nitrometer  can  be,  in  part,  loosened  by  rotat- 
ing or  tapping  the  nitrometer.  When  the  solution  has  become  clear 
the  non-phenol  oil  can  readily  be  read  off  and  the  percentage  calcu- 
lated. 
Laboratory  of 
Smith,  Kline  &  Fren:h  Company. 
