Am.  Jour.  Pharrr, 
June,  1S59. 
}      Gleanings  from  the  German  Journals.  291 
with  water  acidified  with  hydrochloric  acid,  the  acid  solution  filtered, 
rendered  alkaline  with  solution  of  potassa  and  shaken  in  a  separating 
funnel  with  three  successive  portions  of  chloroform  ;  the  chloroforniic 
solution  is  evaporated  in  a  tared  beaker,  dried  at  100°  and  weighed. 
From  1*3  to  1*5  per  cent,  alkaloids  are  obtained,  consisting  of  jervine 
and  veratroidine ;  white  scales  and  microscopic  prisms  make  up  the 
crystalline  forms. — Kremel,  Pharm.  Post,  1889,  227. 
Emulsions. — Hecker  recommends  the  use  of  mucilage  of  acacia  and 
powdered  sugar  in  making  this  class  of  preparations  instead  of  pow- 
dered acacia  and  water,  and  states  that  an  emulsion  can  be  made  as 
quickly  by  this  method  as  an  ordinary  mixture.  It  is  immaterial  in 
which  order  the  substances  are  placed  in  the  mortar  as  by  active  stir- 
ring the  familiar  "  crackling  "  sound  of  a  perfect  emulsion  is  almost 
immediately  heard  ;  no  apprehension  need  be  felt  of  such  an  emulsion 
separatiug  into  layers  in  less  than  twelve  hours.  For  10  gm.  of  the 
substance  to  be  emulsified  are  taken  :  castor  oil,  10  gm.  mucilage  and 
5  gm.  powdered  sugar  ;  almond,  popjiy,  olive  and  cod-liver  oils,  15 
gm.  mucilage  and  5  to  10  gm.  powdered  sugar;  volatile  oils,  25  gm. 
mucilage  and  10  gm.  powdered  sugar;  copaiba  and  Peru  balsam,  15 
gm.  mucilage  and  5  gm.  sugar.  For  resins,  gum-resins  and  ethereal 
extracts  an  equal  weight  of  mucilage  is  desirable  so  as  to  have  a  con- 
sistent method  of  preparing  emulsions. — Pharm.  Post,  1889,  229. 
An  increased  solubility  of  quinine  salts  in  presence  of  antipyrine  was 
noticed  by  Triulzi  (Boll.  Farm.)  ;  if  1  gm.  hydrochlorate  of  quinine 
be  heated  with  0"4-0'5  gm.  antipyrine  and  2  gm.  water  solution  takes 
place  at  25-30°  C. ;  with  0"2-0-25  gm.  antipyrine  at  44-50°  ;  1  gm. 
hydrochlorate  of  quinine  with  2  gm.  water  dissolves  at  52  to  56° ;  on 
cooling  only  the  last  solution  deposits  the  quinine  salt.  Similar  re- 
sults were  obtained  with  valerianate  of  quinine.  This  observation 
may  be  of  value  in  preparing  neutral  quinine  solutions  for  subcutane- 
ous injections. — J.  Blabol,  Pdsch.,  1889,  303. 
Oleum  Cantharidum. — Heat  over  a  moderate  fire  0*3  £m.  can- 
tharidin  with  20  gm.  castor  oil  and  40  gm.  rape  oil  in  a  small  por- 
celain dish  until  solution  is  effected  and  then  dilute  to  200  gin.  with 
rape  oil ;  the  addition  of  the  castor  oil  prevents  the  separation  of  the 
cantharidin.— F.  Eger,  Pharm.  Ztg.,  1889,  213. 
Jlethacetin,  a  new  antipyretic,  is  a  lower  homologue  of  phenacetin, 
having  the  formula  C6H4    yjj^3  jj  q  and  is  prepared  in  an  analogous 
