AmMi°rch,T894.rm'}    G leaning s  from  the  German  Journals.  145 
liquid  and  has  the  formula  (C3H6)2(NH)2 ;  it  is  introduced  as  the 
tartrate  and  pronounced  to  have  at  least  the  same  power  of  dissolving 
uric  acid  as  is  possessed  by  piperazine ;  the  organic  acid  is  claimed 
as  an  advantage  as  this  being  converted  into  the  carbonate  has  a 
tendency  to  render  the  blood  alkaline. — Apotheker  Ztg.,  1894,  76. 
Tricresol. — A  purified  mixture  of  the  cresols  present  in  coal  tar 
soluble  in  water  to  the  extent  of  2-2-2-5  per  cent.,  specific  gravity 
1-042-1-049  at  200  C;  boiling  point,  183-2020  C,  perfectly  soluble 
in  dilute  alkali. — Pharm.  Ztg.,  1893,  751. 
Ferratin  — An  artificial  iron-albumen  food  is  made  from  egg- 
albumen  and  an  iron  salt  in  the  presence  of  an  alkali;  it  contains 
seven  per  cent,  iron  ;  it  is  a  red-brown  powder  almost  odorless  and 
tasteless;  dose  for  adults  0-5  gm.  three  to  four  times  daily. — Pharm. 
Ztg.,  1893,  762. 
Neurodin  or  acetyl-/>-oxy  phenyl  ethyl  carbamate  C6H4(OCOCH3) 
(NHCOOC2H5)  and  Thermodin  or  acetyl-/-ethoxy  phenyl-ethyl  car- 
bamate C6H/OC2H5)  N  (COCH3)  (COOC2H5)  are  colorless  crystal- 
lizable  substances,  almost  insoluble  in  water  and  melting  at  about 
870  C;  the  former  is  used  especially  as  an  antineuralgic  in  doses  of 
°'5-1'  5  §m-  tne  latter  is  used  as  an  antipyretic  in  doses  of  0-5-0-7 
gm. — Pharm.  Ztg.,  1893,785. 
Mercurial  ointment. — Anhydrous  wool-fat  forms  a  splendid  basis 
for  extinguishing  mercury;  it  is  possible  to  extinguish  1,000  gms. 
mercury  with  200  gms.  anhydrous  wool-fat. — E.  Buch,  Pharm.  Ztg., 
1894,  40. 
Basic  bismuth  salicylate. — Crystallized  bismuth  nitrate  (486  gm.) 
is  dissolved  in  about  four  times  its  weight  of  dilute  acetic  acid, 
diluted  with  about  forty  times  its  weight  of  water  and  precipitated  with 
ammonia ;  the  precipitated  hydrate  is  washed  by  decantation  until 
the  test  for  nitric  acid  becomes  negative,  then  transferred  to  a  cap- 
sule and  heated  on  a  water-bath  with  salicylic  acid  (138  gm.)  when  a 
magma  of  crystals,  having  the  formula  BiOC7H503  when  dried  at 
7°-75°  C.  results.  Cold  water  will  not  decompose  the  salt  so  that 
no  reaction  with  litmus  paper  or  ferric  chloride  is  obtainable  ;  strong 
alcohol  and  boiling  water  will  dissolve  small  quantities  of  the  salt, 
the  solution  giving  test  for  bismuth  and  salicylic  acid.  All  attempts 
to  produce  salts  of  different  composition  by  this  method  gave 
negative  results. 
Bismuth  subgallate  can  be  made  by  the  same  method,  using  10 
