336 
Gleanings  from  Foreign  Journals. 
/Am.  Jour.  Pharm. 
1      July, 1885. 
GLEANINGS  FROM  FOREIGN  JOURNALS. 
By  J.  Robert  Moechel. 
Detection  o/HNOg,  HNO2,  and  HNO  in  concentrated  HgSO^. — A  very 
convenient  and  delicate  test  for  the  above  is  ferl:"ous  sulphate,  precipi- 
tated by  means  of  alcohol  from  the  watery  solution,  which  when  dried 
is  a  whitish  coarse  powder.  Put  into  a  test  tube,  about  1  cm.  in  width, 
3  cc.  of  the  colorless  sulphuric  acid,  add  a  pinch  of  the  white  ferrous 
sulphate,  and  shake;  the  salt  floats  in  small  particles,  the  acid  remain- 
ing colorless  and  the  salt  white,  even  on  heating.  In  the  presence  of 
slight  traces  of  nitrogen  acids  the  acid  assumes  a  reddish  violet  color, 
or  the  white  salt  i)articles  take  inmiediately  a  violet-gray  color.  Hager 
states  that  this  test  is  more  delicate  than  the  test  given  by  the  German 
Pharmacopoeia,  and  easier  to  execute. — PA.  Centralhalle,  1885,  p.  141. 
A  new  reagent  for  the  detection  of  albumen  is  given  by  Prof.  Dr. 
Axenfeld,  who  observed  that  auric  chloride  (AuClg)  gives  very  char- 
acteristic colorations  with  albuminoids.  Add  to  a  solution  of  albumi- 
noids a  little  formic  acid  and  AUCI3  (1 : 1000)  and  warm ;  gas  bubbles 
arise,  and  the  solution  assumes  a  rose  color ;  a  further  addition  of 
AuClg  gives  a  purple,  bluish  or  deep  blue  color,  and  a  large  amount 
causes  a  blue  flocculent  precipitate,  the  liquid  becoming  clear  like 
water.  — C^H^/-a/  Bl.  Med.  Wiss. ;  C/iem.  Ztg.,  1885,  No.  32. 
Carvol. — Freshly  made  oil  of  caraway  does  not  contain  a  phenol, 
giving,  therefore,  no  coloration  with  ferric  chloride ;  but  the  oil  in  the 
course  of  time,  say  one  year,  gives  that  coloration. 
To  deprive  carbon  bisulphide  and  kerosin  of  the  disagreeable  odor, 
mixing  with  oil  or  fat  and  careful  redistilling  is  recommended. 
Cornutine  and  Ergotinine. — According  to  M.  Tanret,  Robert's  cor- 
nutine  (''Am.  Jour.  Phar.,"  1885,  p.  170)  is  more  or  less  changed 
ergotinine. — Jour.  Phav.  Chim.,  1885,  p.  6. 
Remedy  for  Tapeworm. — De  Vrij  recommends  the  following,  which 
is  stated  to  yield  a  uniformly  successful  preparation  :  Dry  pomegranate 
root  bark  is  macerated  and  exhausted  with  cold  water,  and  the  liquid 
is  evaporated  to  a  powdery  extract,  which  should  be  kept  in  a  well- 
corked  bottle.  .  The  dose  of  this  is  4  Gm.,  divided  in  8  packages, 
and  taken,  on  an  empty  stomach,  every  quarter  of  an  hour.  To  the 
last  package  0*10  Gm.  (IJ  gr.)  of  calomel  is  added.  Soon  the  living 
taenia  makes  its  appearance,  and  should  be  seized  by  the  patient  or  an 
assistant  to  extract  it  entirely. — Jour,  de  Phar.  d^Anvers,  1885,  p.  59. 
