AmMa°y,r'i8P7h8arm  }      Fluid  Extracts  by  Refer  eolation. 
223 
be  firmly  packed,  and  it  is  quite  important  to  use  the  largest  prac- 
ticable quantity  of  liquid  to  moisten  the  powder  in  repercolation.  The 
results  of  these  percolations  are  given  in  the  following  table, 
Repercolation  of  Cinchona, — Menstruum  5,  4  and  I,  s.  g,  '954  at  20°  C. 
3  JZ 
.0  u 
rt  « 
iS  wo 
c  c 
O  3 
1st  portion. 
2d  " 
3i  • 
4th  " 
5th     "  . 
Total  
Reserved  Ext.. 
Extract  carried 
forward  
Actual  extract; 
obtained.... 
JAVA  CINCHONA. 
First  Percolation. 
Grammes, 
ft 
170' 
226  80 1 
22675 
2o6"i7 
114*61 
944'53 
48-441 
8o2| 
2  96 
"37 
I3"9 
3 
1  "4 
91  21 
48-44 
4277 
91*21 
3  .» 
ft 
•1264 
•0672 
"0I02 
.OO52 
'0060 
Second  Percolation. 
Grammes 
o  <u 
226*93 
227  00 
226-85 
226  78 
226  83 
ft 
o  o 
74  77,  32' 
45"3Ij  20 
5*95  2- 
388;  i- 
2  60  1" 
•1384 
•0880 
■0180 
"0092 
H9 
132  5i 
74  77 
57  74( 
8974' 
CEYLON  CINCHONA. 
Third  Percolation. 
Grammes. 
o  o 
-d  £;  1  §  iJ 
'53  W  £H 
226  84  5818 
22711]  28-00 
226  80  17  94 
227-00  15-35 
226-91!  8-84 
226  70  2  33 
226-82  1-29 
31*93 
58-18 
7375 
74' 19 
25  7 
12-3 
7 
68 
3*9 
10 
'5 
-0480 
•0340 
•0268 
•0192 
"0140 
•0090 
It  remains  now  to  give  a  summary  of  the  results  obtained  from  these 
two  series,  as  bearing  upon  the  relation  between  the  weight  and 
measure  of  the  reserved  portion  of  each  percolation. 
FIRST  SERIES  OF  PERCOLATIONS. 
Reserved  Portions. 
1st  Percolation. 
2d 
3i  • 
4th 
5th 
6th 
7th  " 
£3 
171  10 
226  80 
226'8o 
226  80 
226-80 
226-80 
22680 
1-2  c 
3  D 
Sou 
158 
214 
210 
208 
204 
201 
206 
go, 
7-  6 
60 
7  5 
8-  3 
lO'I 
SECOND  SERIES  OF  PERCOLATIONS. 
Reserved  Portions. 
1st  Percolatioa 
2d 
4th  " 
5th 
Weight. 
Grammes. 
Measure. 
Cubic 
Cent. 
Difference 
Percent. 
170*20 
158 
7'i 
226-90 
210 
7  5 
226  80 
216 
5*o 
226-80 
208 
8-3 
226  80 
