Am j u""iSs.arm* }    Re^t  Literature  Relating  to  Pharmacy.  337 
from  three  to  five  applications  per  day  will  suffice  to  keep  one  free 
from  discomfort. 
Many  patients  have  now  and  then  observed  that  immediately 
following  the  use  of  the  serum  an  increased  irritation  was  manifested, 
and  believed  such  at  first  as  due  to  its  use. 
In  these  cases  the  nose  had  been  previously  irritated,  and  it  be- 
came necessary  to  apply  the  serum  not  only  once,  but  several  times 
in  quick  succession  before  the  irritation  was  removed. 
RECENT  LITERATURE  RELATING  TO  PHARMACY. 
SOME  NEW  ESSENTIAL  OILS. 
Messrs.  Schimmel  &  Co.,  in  their  semi-annual  report  for  April- 
May,  1905,  pp.  82-86,  give  the  results  of  their  examinations  of  the 
following  oils : 
Oil  from  Fagara  octandra  L.  (Rutaceae).  The  oil  obtained  from 
the  wood  of  the  tree  originates  from  Mexico,  and  has  a  bright-yellow 
color  and  a  linalool-like  odor  ;  d15Q  0  922  ;  aD  4-  2°  30' ;  ester  num- 
ber 6-09;  soluble  in  0*5  volumes  90  per  cent,  alcohol,  when  more 
than  1*5  volume  alcohol  is  added,  cloudiness  occurs. 
Oil  from  Inula  graveolens  L.  Desf.  This  composite,  which  is  dis- 
tributed largely  in  the  countries  of  the  Mediterranean,  yields  on 
steam  distillation  a  brown  oil  with  a  greenish  fluorescence;  d15Q 
°'9754J  aD  —  360  40';  acid  number  8-45;  ester  number  161-3; 
ester  number  after  acetylation  239-38;  soluble  in  3  to  3  5  and  more 
volumes  70  per  cent,  alcohol,  with  large  separation  of  paraffin. 
Judging  from  the  odor  the  oil  contains  bornyl  acetate. 
From  London  we  received  a  distillate  originating  from  Australia 
of  the  Myrtacea  Backhousia  citriodora  F.  v.  Mull.,  which  is  there  in. 
digenous.  Years  ago1  we  examined  a  similar  oil  and  described  it 
briefly  ;  the  present  sample  agrees  well  with  the  former  one.  The 
bright  yellow  oil  has  an  aroma  like  lemongrass  oil,  but  finer ;  its 
specific  gravity  is  O  8972  at  1 50  ;  aD  ±  0°  ;  about  95  percent,  alde- 
hyde, probably  exclusively  citral ;  soluble  in  r8  and  more  volumes 
70  per  cent,  alcohol. 
1  Report  April,  1888,  20;  Comp.  also  Gildemeister  and  Hoffmann,  "The 
Volatile  Oils,"  p.  538. 
