AmbJe°cu:-x87h6arm- }  The  Gums  of  Senegal.  56 1 
Price 
Portion 
Ash 
No. 
Name. 
per 
pound. 
soluble  in 
water. 
Tannin. 
Total  Ash. 
soluble  in 
water. 
TaDan. 
$0*65 
i 6*  c 
I  Q" 
j 
2 
Young  Hyson, 
080 
■7  0  •  9 
iy  0 
I  2'4 
5  u 
1 
5 
Japan,  ... 
41  a 
9'5 
0  3 
3'9 
A 
Black', 
0*90 
44*5 
106 
5'5 
C 
Young  Hyson,  . 
0'7C 
j  / 
16- 
6-7 
6 
I  "OO 
At 'n 
20"  1 
1  '  T 
/  1 
3  5 
7 
/ 
tt  « 
C85 
tt  y 
T7'f 
5  7 
g 
T 
japan, 
Oolong, 
35*7 
6l 
9 
0-40 
29-4 
8O 
67 
i'7 
H.n cr  1  ten  Rtpq  lr fa 
5  0 
5'2 
J*3 
1 1 
Japan  Sittings,  . 
0-50 
397 
IO'I 
7-6 
1 2 
Japan, 
0*40 
23'4 
7'6 
4'8 
09 
13 
Young  Hyson,  . 
0*40 
36-9 
12*3 
6-7 
14 
"Am.  Tea  Co."  . 
41*5 
167 
56 
J5 
Oolong, 
39-6 
89 
6-4 
The  results  in  Nos.  10  and  12  indicate  spent  tea.  By  Allen's  for- 
mula, the  per  cent,  tannin  indicates  55  per  cent,  of  spent  tea  in  No. 
10,  and  30  per  cent,  in  No.  12.  By  Wanklyn's  formula,  the  amount 
of  soluble  extract  indicates  36  per  cent,  of  spent  tea  in  No.  10,  and  28 
per  cent,  in  No.  12.  The  infusion  of  No.  10  had  a  very  disagreeable 
odor.  The  low  per  centages  of  soluble  ash  in  Nos.  10  and  12  also 
correspond  with  those  of  spent  tea. 
The  fifteen  samples  were  subjected  to  microscopic  examination  for 
foreign  leaves.  In  No.  9,  a  considerable  number  of  foreign  leaves  were 
found.  These  foreign  leaves  had  an  epidermis  composed  of  small 
tabular  cells  ;  stomates  mostly  on  the  under  side  ;  the  interior  com- 
posed of  an  incomplete  parenchyma  of  round  cells  and  numerous 
intercellular  passages. — Amer.  Chemist,  August,  1876. 
NOTE  ON  THE  GUNS  OF  SENEGAL.1 
BY  DR.  A.  CORRE. 
In  commerce  the  gums  of  Senegal  are  distinguished  according  to  the 
district  which  yields  them  or  the  port  from  which  they  are  exported.2 
They  are  (1)  Gommes  bas-du-fleuve  (Bas-du-fleuve,  Degana  and  Podor  ; 
1 "  Journal  de  Pharmacic"  [4],  vol.  xxiv,  p.  318. 
2  These  gums  are  not  very  often  met  with  in  general  commerce,  the  greater  part 
of  them  being  imported  into  and  used  in  France. — Ed.  "  Ph.  J." 
36 
