The  first  and  second  were  remnants  from  large  quantities,  while  the  fourth
is  interesting  on  account  of  its  age,  having  stood  on  the  shelf  of  an  old
pharmacy  for  at  least  20  years. — Pharm.  Review,  April,  1896,  76-80.
Oil  of  Pycnanihemum  Lanceolatum^  Pursh. —  Chemical  Examination, —
W.  G.  Correll  has  distilled  the  volatile  oil  from  air-dried  mountain  mint
{Pycnanihemum  lanceolatum^  Pursh.),  gathered  during  the  early  part  of
August  in  fiill  bloom,  and  subjected  it  to  chemical  examination.  It  was  of
a  yellow  color  of  medium  depth,  had  an  odor  resembling  pennyroyal,  a  sp.
gr.  at  15°  C.  of  0.91  70,  and  in  a  100  Mm.  tube  at  20'*  turned  the  plane  of
polarized  light  2.95°  to  the  right,  hence  corrected  =  -h  3.25°.  Preliminary
tests  for  the  presence  of  phenols  gave  the  characteristic  reaction  of  thymol
and  of  its  isomer  can^acrol^  and  the  latter  was  sepaiated  and  identified  by
the  author,  and  carvacrol  sulphuric  acid  and  dicarvacrol,  having  the  dis-
tinctive character  and  melting  points  of  these  bodies,  were  prepared  from  it.
