296 
Extract  of  Malt. 
f  Am.  Jour.  Pharm. 
\      June,  1883. 
The  following  table  shows  clearly  that  alcohol  has  only  a  slight 
influence  upon  the  diastatic  action. 
THE  I^TQUID  CONTAINEU 
TEST  WITH  lODlNB 
AND  TIME. 
Alcohol.  Fluid 
ounce. 
Alcohol.  Per 
cent. 
Starch.  Per  ct. 
Ext.  malt.  Per 
cent. 
Saliva.  Per  ct. 
Biue,  no  preci- 
pitate. Min- 
utes. 
Purple.    M  i  n- 
utes. 
Bed.  Minutes. 
Colorless.  Min-  \ 
8-85 
8-85 
15-6 
15-6 
3-37 
3-37 
1 
5 
3 
20 
3 
5 
Saliva  
k 
3-37 
3-46 
3-46 
3-46 
3-2 
3-39 
1 
25 
1 
3-46 
1 
5 
1 
3-46 
1 
15 
15 
2 
20 
20 
3 
25 
24 
5 
1 
15-6 
21-7* 
3-46 
3-2 
1 
1 
IK 
*  Starch  precipitated. 
The  last  table  shows  that  the  diastatic  action  of  extract  of  malt  aud 
of  saliva  is  but  little  affected  by  the  presence  of  alcohol  in  the  starch 
solution,  but  is  influenced  by  the  acid.  The  small  amount  of  sulphuric 
acid  contained  in  the  wine  interferes  little  with  the  action  of  malt 
extract  compared  with  that  of  saliva. 
DETERMINAllON  OF  THE  NITROGENIZED  BODIES. 
Albuminates. — For  this  estimation  I  use  a  solution  of  picric  acid 
in  water,  saturated  in  the  cold ;  also  a  glass  tube  such  as  is  used  for 
the  estimation  of  nitrogen  in  elementary  analyses,  divided  into  one 
hundred  equal  parts,  the  lower  five  divisions  being  further  divided 
into  fifths,  but  any  tall,  narrow  glass  cylinder,  which  is  divided 
accurately  into  equal  parts,  will  answer  the  purpose.  The  cylinder  is 
filled  w^ith  eighty  parts  of  the  solution  of  picric  acid  and  twenty  parts 
of  extract  of  malt,  and  well  agitated  until  the  extract  is  dissolved  with 
the  exception  of  the  albumen,  then  placed  in  a  vertical  position  for 
twenty-four  hours  and  the  quantity  of  precipitate  read  off.  Each 
division  represents  1  per  cent,  by  weight  of  albumen  (nitrogenous 
matter)  dried  at  100°C. 
The  correctness  of  this  estimation  is  reliable  within  -J-  per  cent,  and 
has  been  verified  by  a  series  of  elementary  analyses,  undertaken  with 
