118 
Practical  Notes  from  Foreign  Journals, 
f  Am.  Jour.  Pharm, 
\      Mar.,  1882. 
and  with  reagents  yielded  the  darkest  colored  reactions.  The  Sava- 
nilla  extracts  were  always  darker  than  the  corresponding  extracts  from 
Peruvian  rhatany.  Commercial  extractum  h^americe  americanum 
agreed  in  all  respects  with  the  extract  obtained  from  Savanilla  rhatany 
with  cold  water  ;  but  the  commercial  rhatany  extract  in  lamellis''' 
differed  to  such  an  extent  from  all  extracts  prepared  from  Peruvian 
and  Savanilla  rhatany,  as  to  warrant  the  inference  of  its  being  pre- 
pared from  an  entirely  different  drug ;  it  has  no  astringent  taste,  is  but 
slightly  soluble  in  strong  alcohol,  its  aqueous  solution  yields  a  strong- 
precipitate  with  alcohol,  and  the  precipitates  with  all  reagents  had  a 
color  differing  materially  from  the  precipitates  obtained  with  the  other 
extracts.— PW.  Ztg.,  1881,  No.  103;  N.  Tydschr.  voor  Fhar.,  Oct. 
Tannin  of  Oalcharh  is  obtained  by  treating  the  alcoholic  extract  with 
water  and  saturating  the  solution  with  sodium  chloride,  when  tannic 
anhydride  will  be  deposited.  On  agitating  the  liquid  with  ether,  some 
gallic  and  ellagic  acid  is  removed,  and  on  agitating  now  with  acetic- 
ether  the  tannin  dissolves,  and  on  evaporation,  is  left  as  a  reddish- 
brown  brittle  mass,  which  gives  with  ferric  salts  a  blue-black,  and  with, 
tartar  emetic,  gelatin,  albumen  and  alkaloids,  yellowish-white  precipi- 
tates. The  formula  for  the  anhydrous  tannin  is  C2^2S^\2  is  not  a 
glucoside,  but  on  treatment  with  dilute  acids  yields  oak-red,  02^^22^11- 
—Zeitschr,  Anal  Chem.,  xx,  208-223. 
Administration  of  Tamiin. — The  unpleasant  effects  often  observed  on 
giving  solution  of  tannin  or  powdered  tannin  are,  according  to  Dr.. 
L.  Lewin,  entirely  obviated  by  combining  it  with  albumen.  On 
adding  the  filtered  solution  of  one  white  of  egg  in  100  grams  of  water 
to  a  1  or  2  per  cent,  solution  of  tannin,  and  agitating  the  mixture 
well,  an  opalescent  slightly  milky  liquid  is  obtained,  which  has  a  far 
less  astringent  taste  than  the  simple  solution  of  tannin,  and,  suitably 
diluted,  may  even  be  given  to  babies  with  good  result. — Pai'm.  Post^ 
1881,  p.  427. 
Solubility  of  Chinoline  Compounds. — Dr.  Julius  Donath  experi- 
mented with  chinoline  salicylate  prepared  by  E.  Scliering,  and  found 
it  to  be  not  completely  soluble  in  100  parts  of  water,  and  the  paraoxy- 
benzoate  of  chinoline  even  in  120  parts  of  water.  Both  salts  do  not 
even  yield  a  one  per  cent,  solution  with  alcohol  of  10  per  cent.,  although 
both  are  freely  soluble  in  strong  alcohol ;  they  cannot,  therefore,  be 
easily  administered  in  liquid  form,  and'no  observations  have  been  made 
with  their  administration  as  powder,  followed  by  strongly  alcoholic  or 
