Am.  Jour  Pharm 
Aug.,  1878. 
Duboisia  JVLy  op  oroides. 
387 
o-2  grm.  muriatic  acid    gave  '003  HgCl2   0*5  grm.  soda  gave  *oo6  HgCl,2 
0-5  *'  sodium  chloride  "  *ooi  "  ro  "  sodium  carb.  '*  "004  " 
%'q    "     citric  acid  "    001      "      1*0    "     magnesia  "    '003  " 
Calcined   magnesia  and   calomel,  each   1  gram,  were  mixed  ;  on 
washing  the  powder,  after  24  houts,  with  distilled  water,  "ooi  gram 
corrosive  sublimate  was  obtained.     Lime  has  the  same  effect  ;  but, 
after  digesting  mixtures  of  calomel  with  carbonate  of  calcium  or  of 
magnesium  and  distilled  water,  no  change  was  observed  after  six  hours. 
Troches  of  calomel  made  with  pure  sugar,  free  from  lime,  did  not 
contain  a  trace  of  corrosive  sublimate  after  having  been   kept  for 
several  months. — U  Union  Pbar.,  134-136 — Gaz.  M'tdicale 
THE  BOTANICAL  CHARACTERS  OF  DUBOISIA 
MYOPOROIDES,  R.Br. 
By   Prof.   Dr.  DeLanessan. 
This  is  a  handsome,  erect  shrub,  about  4  or  5  meters  high,  which  is 
indigenous  to  New  Caledonia  and  some  parts  of  Australia.  The  stem 
and  larger  branches  are  covered  with  a  thick  and  fissured  corky  layer  ; 
the  branches  terminate  in  conical,  one-sided  racemose  cymes  of  small 
white  flowers.  The  leaves  are  alternate,  somewhat  decurrent,  simple, 
elliptic-lanceolate,  exstipulate,  entire,  narrowed  at  the  base  into  a  short 
petiole  about  2  centimeters  long,  and  there  furnished  with  two  small, 
lateral,  narrow  leaflets.  The  entire  length  of  the  leaf  is  10  or  13 
centimeters,  its  width  near  the  middle  1  J-  to  2  centimeters  ;  the  limb  is 
thin,  but  firm,  shining  and  smooth.  The  mid-rib  is  slightly  prominent, 
the  lateral  nerves  are  alternate  and  fine.  The  floral  leaves  are  shorter, 
sessile,  elongated,  narrow-elliptic  and  gradually  reduced  to  short  bracts. 
Throughout  the  greater  part  of  the  year  the  cymes  contain  buds  and 
flowers,  and  fruits  in  different  stages  of  maturity.  The  flowers  are 
hermaphrodite,  with  a  convex  receptacle,  a  short  monosepalous 
cup-shaped  and  five-toothed  calyx,  and  a  monopetalous  corolla, 
having  a  funnel-shaped  tube  and  a  somewhat  bilabiate,  5-lobed  limb, 
the  lobes  being  induplicate  and  contorted  in  praefloration,  alternate  with 
the  calyx  teeth,  the  two  posterior  ones  narrower,  the  anterior  ones 
larger  than  the  others.  The  four  didynamous  stamens  are  inserted  in 
the  corolla  tube  ;  no  fifth  stamen  or  rudiment  of  it  could  be  observed, 
although  figured  by  Endlicher  in  Iconographia,  and  admitted  by 
Bentham  and  Hooker.    The  filaments  are  flattened,  somewhat  broader 
