GLEANINGS  FROM  GERMAN  JOURNALS. 
Ill 
all  the  sesqui-  to  the  protochloride  and  the  dry  salt  will  keep  for 
a  considerable  time.    The  proposed 
Tinctura  ferri  protocliloridi  he  advises  to  preserve  by  sugar, 
I  ounce  to  1  oz.  of  the  salt  and  7  oz.  of  alcohol  of  60  per  ct. 
(Schweiz.  Zeitschr.  v.  123,  124.) 
Use  of  glycerin. — Gros-Renaud  states  that  glycerin  of  1.200 
spec.  grav.  dissolves  between  177  and  187**^  F.  much  aniline- 
violet,  the  so-called  anileineor  indisine;  between  133° and  144^ F. , 
whether  diluted  with  water  or  not,  it  readily  dissolves  gum  ara- 
bic,  and  the  solution  remains  unchanged  for  a  long  time  ;  albu- 
men is  taken  up  in  all  proportions  by  glycerin,  diluted  with  an 
equal  measure  of  water,  between  90  and  100*^  F.,  and  thus  pre- 
served for  considerable  time  without  undergoing  putrefaction. 
(Polytechn.  Centralhalle — Schweiz.  Zeitschr.  v.  127.) 
Detection  of  nitric  acid  Stein  proposes  to  heat  the  salt  with 
pure  protoxide  of  lead  in  a  long  test  tube,  into  the  orifice  of  which 
a  strip  of  filtering  paper,  previously  dipped  into  an  acid  solu- 
tion of  protosulphate  of  iron,  has  been  inserted;  the  paper  must 
not  become  too  hot.  A  yellowish  to  brown  color  will  be  observed 
from  a  mixture  of  1  p.  saltpetre  with  1000  p.  glauber  salt.  The 
presence  of  chlorides  and  binoxide  of  lead  must  be  avoided. 
(^Pharmac.  Centralhalle — Schw.  Zeitschr.  v.  128.) 
Preparation  of  antimoniate  of  potassa. — A.  Reynoso  prepares 
it  by  adding  the  solution  of  a  salt  of  antimony  to  sufficient  caus- 
tic potassa  to  retain  the  oxide  in  solution,  which  is  then  oxidiz- 
ed by  the  addition  of  permanganate  of  potassa,  until  the  liquid 
begins  to  remain  colored  ;  a  few  drops  of  the  alkaline  solution 
of  antimony  will  remove  the  color,and,  by  evaporation  and  cooling, 
crystals  of  antimoniate  of  potassa  are  soon  obtained. — (Polyt. 
Notizblatt. — Schw.  Zeitschr.  v.  131.) 
Nitric  acid  stains  may  be  easily  removed  from  the  skin  by 
sulphide  of  ammonium  containing  caustic  potassa,  scraping  the 
colored  portion  oif,  and  washing  with  water  and  very  diluted  sul- 
phuric acid.  Deadened  skin,  like  callus,  &c.,  may  be  removed  in 
a  similar  manner  ;  the  hands  become  perfectly  clean  and  smooth. 
(Pharm.  Zeit.  v.  Bunzlau. — Schw,  Zeitschr.  v.  132.) 
