62        ANALYSIS  OF  ORDINARY  COMMERCIAL  JALAP,  ETC. 
study  of  zymotic  diseases  and  of  cholera  especially,  the  effects 
bearing  strong  comparison. 
Faithfully  yours, 
Charles  Symes. 
Birkenhead,  August  20th,  1867. 
— Lond.  Pliarm.  Jour.,  Sept.,  1867. 
ANALYSIS  OF  ORDINARY  COMMERCIAL  SPECIMENS  OP 
JALAP,  SHOWING  THEIR  RELATIVE  VALUE  IN  PRO- 
PORTION OF  RESIN  OF  JALAP,  COMPARED  WITH 
MARKET  PRICE. 
By  Mr.  Alfred  Southall  (Birmingham). 
l/c&tl  lUbxUil* 
Resin, 
Market  Price. 
per  cent. 
s. 
d. 
No. 
1 
Jalap,  Tops 
5 
0 
4  per  lb. 
a 
2 
a  a 
12 
0 
5 
u 
a 
3 
"  Tampico 
0 
10 
<( 
a 
4 
a  a 
m 
1 
0 
U 
a 
5 
a  a 
301 
1 
0 
it 
a 
6 
a  a 
29 
1 
6 
a 
a 
7 
a  a 
121 
1 
6 
a 
a 
8 
a  a 
33f 
2 
0 
a 
a 
9 
a  a 
27 
2 
0 
a 
a 
10 
"     Veia  Cruz 
15} 
4 
0 
a 
a 
11 
a  a 
m 
4 
0 
it 
a 
12 
a  a 
17i 
0 
a 
a 
13 
a  a 
12} 
4 
0 
a 
a 
14 
a  a 
23 
4 
4 
a 
it 
15 
tt  a 
20i 
4 
6 
ti 
a 
16 
a  tt 
16f 
4 
10 
a 
The 
impor 
tance  of  maintaining 
a  uniform 
medicinal 
value 
the  drugs  ordered  by  the  Pharmacopoeia  cannot  be  over  esti- 
mated. The  British  Pharmacopoeia  has,  in  the  instances  of  opi- 
um, cinchona  bark,  and  scammony,  given  a  standard  value  for 
each  of  these  remedies  ;  but  I  think  it  might  with  great  advan- 
tage have  included  some  other  drugs,  and  among  the  rest  the 
subject  of  this  analysis.  That  market  prices  are  frequently  no 
guide  to  the  pharmaceutist,  the  analyses  which  were  offered  at 
the  last  meeting  of  this  Conference  of  various  samples  of  opium 
