THE  MOST  CORRECT  METHODS  FOR  PREPARING  EXTRACTS.  237 
Table  II. 
Embraces  the  extracts  which  are  prepared  by  means  of  alco- 
hol and  water,  the  columns  correspond  with  the  former,  E,  con- 
taining the  quantity  of  alcohol,  spec.  grav.  .863,  and  water  in 
thousands,  their  proportion  in  all  cases  being  1,  2 ;  column,  1, 
the  results  of  digestion  for  twenty-four  hours,  at  30°  C;  column 
5,  the  results  by  cold  percolation  with  the  aid  of  the  suction 
pump. 
Extr.  Absinthii, 
"  Acori, 
"  Angelicas, 
u  Arnicae  raclic. 
"  Cascarillae, 
«  Chamomillae, 
"  Colombo, 
'*  Ouaiaci  lign. 
"  Hellebori  nigr. 
"  Jugland.  nuc. 
«  Millefolii, 
"  Salvise, 
u  Sarsaparillae, 
"  Valerianae, 
For  Ext.  Sarsap.  cold 
B. 
Artemisia  Absinthium,  L. 
Acorus  Calamus,  L. 
Angelica  Archangelica,  L. 
Arnica  Montana,  L. 
Croton  Eleuteria.  Schto. 
Matricaria  Chamomilla,  L. 
Menispermum  palmatum,  L. 
Guaiacum  officinale,  L. 
Helleborus  nigei-,  L. 
Juglans  regia,  L. 
Achillea  Millefolium,  L. 
Salvia  officinalis,  L. 
Had.  Sarsap.  Hondur. 
Valeriana  officinalis, 
displacement  is  preferable,  so  a 
flow.  comm. 
late  in  fall 
early  spring 
fall 
the  flowers 
fall 
flow.  comm. 
flowering 
sprmg 
to  leave  the  starch  behind 
D. 
E. 
1 
•2 
3 
4 
5 
156 
4:8 
259 
:;o:; 
324 
270 
207 
157 
3:6 
140 
145 
155 
143 
'200 
187 
3:6 
270 
32S 
345 
170 
3:6 
130 
150 
103 
136 
139 
2:4 
79 
88 
101 
95 
100 
186 
6:12 
1.37 
252 
2S2 
149 
158 
3:6 
220 
253 
345 
204 
2:4 
56 
OS 
77 
48 
56 
318 
2:4 
37 
49 
55 
38 
4:8 
228 
•240 
■J02 
238 
468 
6:12 
241 
253 
202 
150 
5:10 
172 
216 
232 
212 
3:6 
116 
112 
133 
185 
3:0 
112 
•224 
233 
199 
230 
Table  III. 
Contains  the  results  of  the  alcoholic  extracts,  the  columns,  A, 
B,  C,  D,  as  above,  1,  2,  3,  the  yield  by  digestion  for  twenty-four 
hours ;  1,  of  1000  parts  fresh  herbs ;  2,  of  the  same  previously 
dried,  with  1000  parts  of  alcohol  each ;  and,  3,  of  1000  parts  dry 
herb  with  the  proportionate  quantity  of  alcohol;  4,  by  cold  dis- 
placement of  1000  parts  of  dried  herb  with  the  employment  of 
the  suction  pump,  and  3000  parts  alcohol  of  .863  spec.  grav. 
A. 
Extract.  Aconiti, 
"  Belladonna  fol. 
«  Chelidonii, 
"  Conii  macul. 
«  Digitalis  fol. 
"  Hyosc.  fol.,  2  years' 
"  "       1  years'  growth, 
*  Lactucaj, 
"  Nucis  vomicse,  with  3000  ala 
8  Secalis  cornuti, 
13. 
Aconitum  napellus,  L. 
Atropa  belladonna,  L. 
Chejidonium  majus,  L. 
Conium  maculatum,  L. 
Digitalis  purpurea,  L. 
Hyoscyamus  niger,  L. 
I 
Lactura  virosa,  L. 
c. 
1). 
1 
2 
3 
4 
before  flow. 
243 
29 
22 
88 
176 
while  flow. 
170 
52 
33 
186 
221 
before  flow. 
170 
25 
31 
181 
before  flow. 
140 
37 
104218 
commence  fl. 
133 
28 
18 
137 
'271 
before  flow. 
115 
IS 
18 
158 
90 
13 
150 
before  flow. 
125 
20 
16  125 
106,  in  Mohr's  appar.,  121  p. 
(< 
133 
Table  IV. 
The  ethereal  extracts  were  made  by  macerating  1000  parts  of 
the  dry  powdered  substance,  at  15°  C.  employing  3000  parts 
ether,  spec.  grav.  .730,  loss  of  ether  }y  and  by  decoction  in 
Mohr's  apparatus,  with  6000  parts  ether,  loss  one-quarter. 
