1 6  Polarization  without  a  Polarizer.  {AmjlnUri|Jarm' 
Tinctura  Hydrastis. — Hydrastis  Rhizome,  in  No  60  powder,  2 
oz.;  Proof  Spirit  sufficient  for  preparing  one  pint  (20  fl.  oz.)  of  tinc- 
ture by  maceration  and  percolation. 
Tinctura  Strophanthi. — .Strophanthus  Seed,  in  No.  30  powder, 
and  dried  at  no°  F.  (43.3 0  C),  1  oz.;  Pure  Ether  and  Rectified 
Spirit,  of  each  sufficient.  Moisten  the  powder  with  the  ether, 
macerate  for  24  hours,  and  percolate  with  ether  until  the  fluid 
passes  through  colorless  ;  dry  the  marc  at  1200  F.  (48-9°  C.)>  again 
reduce  it  to  powder,  moisten  with  spirit,  macerate  for  48  hours, 
percolate  slowly  with  rectified  spirit,  until  half  a  pint  of  tincture  is 
obtained,  and  dilute  this  with  rectified  spirit  to  one  pint  (20  fl.  oz.). 
Trochisci  Sulphuris. — Precipitated  Sulphur,  36^  gr.;  Acid  Potas- 
sium Tartrate,  720  gr.;  Refined  Sugar,  in  powder,  5,760  gr.;  Gum 
Acacia,  in  powder,  720  gr.;  Tincture  of  Orange  Peel,  720  minims ; 
Mucilage  of  Acacia,  720  minims.   Make  into  720  lozenges. 
Unguentum  Conii. — Juice  of  Hemlock,  2  fl.  oz.;  Hydrous  Wool- 
fat,  oz.;  Boric  Acid,  10  gr.  Evaporate  the  juice  to  2  fluid 
drachms  at  a  temperature  not  exceeding  1400  F.  (6o°  C),  add  the 
boric  acid  and  the  wool-fat  and  mix  thoroughly. 
Unguentum  Hamamelidis. — Liquid  Extract  of  Hamamelis,  50 
minims;  Simple  Ointment,  410  grains.    Mix  thoroughly. 
POLARIZATION  WITHOUT  A  POLARIZER. 
To  the  Editor  of  the  American  Journal  of  Pharmacy  : 
I  have  accidentally  made  a  quite  useful  discovery,  which  I  have 
not  seen  mentioned  before.  In  order  to  polarize,  we  put  a  polarizer 
(Nicol)  beneath  the  stage  and  an  analyzer  (Nicol)  above  the  objec- 
tive (either  right  next  to  it,  at  the  end  of  the  draw-tube,  or  above 
the  eye-piece),  the  selenite  comes  on  top  of  the  polarizer.  Now,  I 
found  that  the  polarizer  is  not  absolutely  indispensable.  Given  a 
certain  polarizing  condition  of  the  sky  (i.  e.  blue,  with  more  or  less 
watery  vapor — as  either  before  or  after  a  rain,  snow,  or  fog),  you 
can  polarize  very  nicely  with  the  analyzer  alone,  and,  if  you  want 
display  of  color,  put  the  selenite  on  top  of  the  slide,  or  anywhere 
convenient  to  you — so  it  comes  beneath  the  analyzer.  The  colors 
(and  crosses)  will,  of  course,  be  somewhat  fainter  than  when  you 
use  the  polarizer  too.  In  order  to  get  the  best  display,  it  will  be 
necessary  to  rotate  both  analyzer  and  selenite  until  in  the  proper 
