326 
V arieties. 
{Am.  Jour.  Pharm, 
July, 1875. 
tween  folds  of  bibulous  paper  and  dry  it  by  the  heat  of  a  water-bath. 
Dissolve  the  quinia  thus  obtained  in  the  oleic  acid  by  the  aid  of  a  gentle 
heat,  mix  the  solution  whilst  warm  with  5  oz.  of  cod-liver  oil,  also 
warm,  strain  through  cotton  wool,  or  filter  through  paper  if  necessary^ 
then  add  the  remainder  of  the  oil.  The  product  should  measure  3a 
fl.  oz,  ;  each  tablespoonful  (fl^ss)  contains  oleate  of  quinia  equal  to  one 
grain  of  sulphate. 
The  above  preparation  has  the  characteristic  taste  of  qt;inia  and 
cod-liver  oil,  the  oleic  acid,  from  its  small  amount,  not  being  precept- 
ible. 
A  sample,  prepared  two  months  ago,  has  kept  well,  being  quite  clear 
and  as  free  from  deposit  and  objectionable  odor  as  on  the  day  it  was 
made. 
Whilst  writing  on  this  subject,  I  may  remark  that  I  am  surprised 
more  attention  has  not  been  given  to  the  production  of  ointments  and 
oleaginous  liniments  containing  the  oleates  of  aconitia  and  atropia.  I 
believe  that  these  preparations  would  be  more  certain  and  uniform  in 
their  effects,  and  therefore  more  reliable  than  the  corresponding  lini- 
ments of  the  "  Pharmacopoeia." — Pharm.  Journ.  and  Trans. ^  Feb.  13th,, 
1875-   
VARIETIES. 
Important  Improvement  in  Photography. — It  is  a  well-known  fact  that  it  is. 
utterly  impossible  to  photograph  certain  colors.  Violet  and  blue  are  chemically 
very  active  colors,  while  red,  yellow  and  green  act  very  little,  if  at  all,  on  the  sensitized 
plate.  Hence  we  see  a  blue  ribbon  on  a  yellow  dress,  rendered  photographically  as 
a  white  ribbon  on  a  black  dress.  Dr.  Vogel,  the  celebrated  German  photographefy 
has  found  that  bromide  of  silver  can  be  made  sensitive  for  the  red,  yellow  and  green 
rays  by  adding  to  the  collodion  coloring  substances  which  powerfully  absorb  said 
rays. 
By  using  collodion  colored  red  by  corallin,  the  yellow  rays  will  act  with  nearly 
the  same  energy  as  the  blue  rays.  If  colored  green  by  anilin  green,  we  can  very- 
well  photograph  red  j  and  so  on.— ^rr^.  f.  Pharm. y  May,  p.  180. 
Necrometer — Bouchert  found,  by  examination  of  1,100  men  (living,  dead  and 
in  a  trance),  that  no  corpse  h^s  a  higher  temperature  than  20°  C.  (68°  F.)  He  con- 
structed a  thermometer  (alcohol)  in  such  a  way  that  the  alcohol  does  not  become 
visible  before  20°  C.  have  been  reached.  Even  a  child  will  be  able  to  tell  whether 
life  is  extinct  or  not. — Ibid.^  p.  138. 
To  Deprive  Cocoa-nut  Oil  of  its  Odor. — Mix  with  i- 16  part  freshly  prepared 
bone-black  and  1-32  part  calcined  magnesia,  digest  for  three  days,  shaking  fre- 
quently, let  stand  till  clear,  and  filter. — Journ.  Applied  Science,  1874. 
