•}   Gleanings  from  the  German  Journals.  615 
I. 
11. 
in. 
.  .  1030  C. 
ioo°  C. 
ioo°  C. 
"nictill  of**  iit>  \r\  -K  f\c\°  O 
9'° 
1 1  *o  cc. 
(including,  .  . 
1 '5 
7'5 
9"o  cc.  water.) 
i85°C.,    .  .  ... 
•  •  2-5 
I'O  cc. 
195°  C.,  ... 
•  •  38-0 
49*o 
70-8  cc. 
.  .  30-0 
11-5  cc. 
37 
2'8  cc. 
96^0 
94-2 
97*i  cc. 
7'5 
9"  cc. 
Phenols  soluble  in  alkali,    .  . 
•  •  94*5 
867 
88-i  cc. 
.  .  4-0 
5'8 
2"9  cc. 
Acetanilide  can  now  be  purchased  of  such  purity  that  the  solution 
irf  sulphuric  acid  will  stand  for  hours  without  showing  coloration ; 
one  gram  boiled  with  30  cc.  water  and  one  drop  of  a  permanganate 
solution  added  will  retain  the  red  color  for  five  minutes.  Dried  at 
1050  C.  it  has  the  melting  point  of  1 140  C. — Pharm.  Ztg.y  1892, 
636,  674. 
Purification  of  extract  of  liquorice  —The  extract  broken  into  small 
pieces  is  dissolved  in  6  or  7  times  its  weight  of  water,  stirring  facili- 
tates the  operation  ;  into  this  solution  while  being  stirred  there  is 
sifted  powdered  talcum  (in  amount  equalling  ^3  of  the  extract  taken) 
and  then  a  quantity  of  water  of  ammonia  (sp.  gr.  0  960)  added  suffi- 
cient to  impart  a  faint  odor  (J^-  of  the  weight  of  the  extract  is 
generally  sufficient)  ;  lastly,  a  weight  of  90  per  cent,  alcohol  is  added 
equalling  -J-  of  the  weight  of  the  extract ;  after  continued  agitation 
for  10-15  minutes  the  vessel  is  closed  and  set  aside  for  1^-2  days 
to  allow  the  suspended  matter  to  subside  ;  the  supernatant  liquid 
will  be  found  perfectly  clear,  and  is  separated  by  decantation ;  the 
turbid  portion  is  diluted  with  water,  filtered  and  washed,  and  the 
clear  solutions  are  then  evaporated.  Another  method,  although  an 
inferior  one,  differs  from  the  above  by  using  powdered  glycyrrhiza, 
instead  of  the  powdered  talcum  (  10-12-5  per  cent,  of  the  weight  of 
the  extract)  the  separation  requires  longer  time  and  the  sediment 
becomes  more  troublesome  in  washing.  In  these  processes  the 
powders  are  added  to  attract  the  suspended  matter  and  cause  them 
to  deposit ;  the  ammonia  is  added  to  dissolve  free  glycyrrhizin  which 
is  always  present,  and  the  alcohol  to  facilitate  separation  of  the 
suspended  albuminoid  matter  also  to  prevent  fermentation;  in  hot 
weather  a  larger  proportion  of  alcohol  may  be  required  for  this 
purpose. — H.  Hager,  Pharm.  Ztg.,  1892,  650. 
