"ber^m?  }  Neiv  Essential  Oils.  533 
Of  those  which  do  not  yield  official  drugs  the  number  is  much 
larger  and  it  is  planned  to  add  representative  specimens  as  rapidly 
as  possible  of  all  drug  yielding  plants,  some  of  which  necessarily 
must  be  conserved  in  the  greenhouse. 
The  general  plan  in  developing  the  garden  was  to  keep  different 
species  of  plants  belonging  to  the  same  family  in  beds  of  close 
proximity.  This  was  followed  out  to  a  certain  extent,  but  until  soil 
conditions  can  be  produced  as  desired  in  each  plot  the  plan  will  not 
be  entirely  feasible.  Such  an  association  of  plants  greatly  enhances 
the  value  of  the  garden  in  giving  instruction  in  pharmaceutical 
botany. 
The  effect  of  different  soils,  moisture,  etc.,  on  the  constituents 
of  certain  plants  is  to  be  carefully  observed  and  it  is  hoped  that 
some  valuable  pharmaco-physiologic  work  can  soon  be  accomplished. 
NEW  ESSENTIAL  OILS.i 
Oil  of  Chamcecyparis  Lazusoniana. — More  than  20  years  ago  - 
we  reported  on  the  oil  of  the  genus  Chamcecyparis  (N.  O.  Conif- 
erse),  the  sample  then  referred  to  being  the  product  of  Chamcecy- 
paris obtusa  Endl.,  a  native  of  Japan.  We  are  now  in  a  position  to 
describe  the  oil  of  a  second  species,  Chamcecyparis  Lawsoniana  Pari. 
(Cupressus  Lawsoniana  A.  Murr.),  a  stately  coniferous  tree,  often 
found  in  German  gardens.  This  oil  was  distilled  by  ourselves. 
The  distilling  material,  which  came  from  Holstein,  yielded  about 
J  per  cent,  of  a  lemon-yellow  oil  of  an  odor  reminding  of  oil  of  savin 
or  of  cypress.  Its  other  properties  were  as  follows :  d^gO  0,9308, 
dD  +  23°  48',  nD2o°  148844,  acid  no.  3,7,  ester  no.  61,6,  ester  no. 
after  acetylation  78,8,  soluble  in  5^  its  vol.  of  90  per  cent,  alcohol, 
with  I  to  3  vols,  passing  turbidity.  With  bisulphite  we  succeeded 
in  isolating  small  quantities  of  an  aldehyde  which,  judging  by  its 
odor,  was  perhaps  identical  with  laurinic  aldehyde. 
Camphor  from  Cinnamomum  Glandiiliferum. — R.  S.  Pearson, 
of  Dehra  Dun,  has  obtained  from  the  leaves  of  Cinnamomum  zlandu- 
liferum,  a  laurel-tree  growing  in  the  districts  south  of  the  Himalayas, 
a  camphor  which  must  probably  be  regarded  as  identical  with  the 
Japanese  commercial  product.  A  sample  of  the  crude  product, 
which  has  been  sent  to  us  by  Mr.  Pearson,  possessed  a  m.p.  of  175°, 
which  was  raised  to  176°  after  recrystallization  from  dilute  alcohol. 
^  From  Semi-Annual  Report  of  Schimmel  &  Co.  (Fritzsche  Brothers), 
October,  1910. 
^  Schimmers  Report,  1889. 
