PROPOSED  ECONOMY  OF  ALCOHOL  IN  PERCOLATION,  ETC.  119 
TABLE  I. 
Percolation  of  Powdered  Colchicum  Seed. 
0> 
ID 
0) 
(X 
i  0) 
s  2 
o 
Cm 
fl.  oz 
1 
2 
3 
4 
5 
6 
7 
8 
9 
10 
11 
12 
13 
14 
15 
16 
17 
18 
19 
20 
21 
22- 
23- 
24- 
25- 
oj  as 
S  a  1 
o  a 
o 
C  o 
dj  o 
grain.- 
108-21 
10210 
9S-0? 
93-85 
88-96 
84-90 
78  34 
71-44 
64-68 
57-55 
50-42 
4519 
39.36 
35.98 
31-99 
28.15 
25-19 
22-00 
17-46 
15-74 
13-38 
11-99 
1028 
8  19 
8-38 
1st 
2d 
1st  8 
3d  4 
1st  12 
4th  4 
5th 
6th 
7  th 
8  th 
9th 
10th 
llth  k 
Total. 
4  fluid  oz 
4  « 
PARALLEL  EXPERIMENTS. 
Conical  Per1 
colator.* 
Reserved  perco- 
late. 
Final  percolate. 
Finished  Fluid 
Extract. 
In  each  fluid  oz 
of  Fluid  Ext. 
12th  4  fluid  oz. 
13th  4  " 
14th  4  " 
15th  4  " 
grains 
424-50 
3,4,5-23 
769-73 
238-36 
1008-09 
141-31 
89  0s 
58-53 
41-49 
29-  82 
30-  00 
27-9 
26-32 
1452-61 
100809 
444-52 
1432-03 
5* 
29  215 
23760 
52-975 
16-404 
69-379 
9-7:5 
6M31 
4028 
2-855 
2-052 
2-085 
1  9S 
1-812 
89  50 
24-45 
Cylindrical 
Percolator. 
PARALLEL  EXPERIMENTS. 
>.>H 
<3 
grams 
423-57 
K75'<?0 
799-1 
268  08 
1067-25 
139  09 
68-34 
38-52 
32  84 
29-26 
'27-97 
27-23 
2500 
1455  50 
a  x 
a  a. 
29  101 
25-SO: 
54-90 
18-411 
73-317 
9-55( 
4-700 
2-64C 
2  2ot 
2-OU: 
1-92-. 
1-871 
1-718 
Conical  Per- 
colator f 
a  rs 
u  a. 
i.  a) 
grains. 
1067-25 
388-25 
1466-20 
91-64 
24-20 
22-60 
734-16 
211-51 
915-67 
132-98 
10112 
70  93 
43-90 
39-26 
30-56 
27-60 
25  01 
1417-03 
945-67 
471  35 
1432-03 
=  o  s 
5  ° 
Cylindrical 
Percolator. 
O,  OB 
Q 
51-811 
14-926 
66-73' 
9-385 
7-136 
5  006 
3-098 
2-7  71 
2-156 
1-948 
1764 
89-50 
grains 
bJD_,  . 
a  o  T- 
;  «*-(  X 
r1  O  a. 
780  84 
246-37 
1027-21 
171-87 
7112 
40-93 
32-60 
28-34 
26-85 
28-15 
26-30 
1453-37 
1027-21 
426  16 
142610 
8913 
25-74 
24-18 
20-37 
22-23 
53-722 
16-951 
70673 
11-8*5 
4-893 
2  816 
2  243 
1  950 
1-848 
1-9  i7 
1-810 
732-34 
222.12 
954-46 
147-62 
46-87 
16-68 
8-35 
4-09 
2-  60 
3-  90 
205 
1186-62 
954-46 
23216 
7413 
this  constant  quantity  be  subtracted  from  every  weight  of  the 
whole  series,  the  remainders  will  much  more  nearly  represent 
the  medicinal  or  therapeutic  value  of  the  extract.  The  result 
of  this  subtraction,  applied  to  the  last  experiment  of  the  last 
parallel,  is  shown  in  the  final  column  of  the  table,  as  being  the 
probable  quantity  of  extract  of  average  medicinal  efficacy  yielded 
from  each  portion  of  the  percolate  represented  by  it.  This  final 
column  is  headed  44 Probable  effective  extract,"  and  24-25  grains 
is  adopted  as  the  constant  quantity,  this  being  below  the  mean 
of  three  evaporations  of  the  12th  four  fluidounces  of  percolate. 
This  calculation  makes  the  reserved  percolate  represent  80*48 
per  cent,  of  the  total  medicinal  value  of  the  sixteen  troyounces 
*  This  experiment  is  strictly  officinal,  and  is  adopted  as  the  standard. 
See  page  112. 
f  This  experiment  is  officinal,  but  less  critically  so.    See  page  113. 
