116  Volatile  Oil  of  Monarda  Punctata.  {^"jkirchjm^"^' 
were  taken  to  be  mixtures  of  these  larger  ones ;  the  distillate  coming 
over  regularly  and  gradually  until  230°  was  reached,  when  the  lar- 
gest fractions  were  obtained.  The  portion  distilling  above  250°  was 
viscid,  of  dark-brown  color,  empyreumatic  odor ;  this  being  a  decom- 
position product  was  disregarded. 
Fraction  I  (160°  to  175°),  after  redistillation  of  several  times  over 
metallic  sodium,  the  largest  portion  distilled  at  160°  to  163°  C.  This 
corresponded  to  the  lightest  portion  obtained  from  sample  No.  I,  al- 
though the  boiling  point  of  the  former  was  a  few  degrees  higher  than 
that  of  this  body.    This  was  colorless,  of  fragrant  odor,  sp.  gr.,  .854. 
Five  combustions  of  this  compound,  of  which  the  first  three  are 
those  after  once  redistilling  over  sodium,  the  other  two  after  another 
such  treatment,  gave  the  following  results : 
Calculated  for  Ci  o  H  j  ^  •  Found. 
1. 
2. 
3. 
4. 
5. 
C  88-23 
H  11-77 
87-02 
11-40 
87-08 
11-52 
87-20 
11-61 
88-20 
11-55 
88.25 
11-70 
100.00 
98-42 
98-60 
98-81 
99-75 
99-95 
In  composition  this  body  agrees  with  that  obtained  from  sample  of  oil 
'No,  I,  and  with  very  close  figures  to  the  formula  C^q  H^g,  as  noted  above. 
Fraction  YIII  (230°  to  240°),  after  redistillation  distilled  at  230°  to 
:232°  C.  This  corresponded  to  the  same  fraction  obtained  from  sample 
of  oil  No.  I  at  this  temperature.  This  was  almost  colorless,  becoming 
yellow  on  standing,  sp.  gr.  .964,  of  a  mint-like  odor.  Three  com- 
bustions of  this  compound  showed  it  to  have  the  same  composition  as 
the  former  body  found  in  the  oil  No.  I. 
Calculated  for  Cio      4  0.  Found. 
THYMOL. 
1. 
2. 
3. 
C  80-00 
79.90 
80-10 
80-05 
H  9-33 
9.45 
9.40 
9-35 
0  10-67 
10-65 
10-53 
10-60 
Fraction  IX.  (240°-250°),  when  redistilled,  yielded  a  very  large 
portion  at  240°-242°  C.  This  was  an  oily  liquid,  similar  to  the 
foregoing,  slight  yellow  color,  specific  gravity  9*72,  mint-like  and  em- 
