2jO 
Mr. Thompson’s Experiments 
v 
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r-> 4 -j 
' The 
charge of 
powder. 
'w G 
QJ 
' . . r-> 
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U. 
G 
0 
Weight. 
Height. 
Grs. 
In. 
N r 
62 
33 ° 
2,9 
6 3 
64 
6 5 
66 
67 
68 
218 
D 9 
69 
70 
7 i 
72 
73 
74 
75 
o 10 
_Q M 
Cj rt 
H _c 
CJ 
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In. 
D 3 
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2,6 
• • 
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• • 
■ o 
1 >3 
o 
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b3 
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V 
. u 
aj 
CJ 
<L> 
CU 
O 
Ctf 
° E 
p 
Z >0 
-a 
v 
P4 
cj 
P 
Inches. 
8 , 
8.5 
7,2 
7,7 
8.4 
8 , 
6,82 
6.6 
6,85 
5.5 
x 
ri 
<u 
_P 
£ 
_o 
aj 
JP 
TP 
C 
<L> 
a, 
cj 
cj 1 
be 
inches. 
6 3> 
65 , 
59,5 
65, 
64, 
64,6 
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O 
CJ 
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r-C. Cj 
4~» QJ 
*- 
O <l> 
r-< 
nd TU 
i— « 
G 
-G 
u 
Inches. 
26,4 
• • ® 
25.3 
• VO 
26,35 
25,8 
19,56 
18,2 
19, 12 
l6 ,33 
8,72 
8,44 
8,47 
9.3 
P p 
8-° 
CJ 
Ft. in 
fee. 
1 599 
1652 
I C62 
*495 
1633 
j 556 
1 349 
1294 
1345 
1080 
Remarks, 
1 6th clay; medium velo- 
J city 1625. 
Medium velocity 1528. 
| Medium velocity 1594. 
The powder was rammed very hard. 
Ditto much harder. 
Ditto as hard as in N° 68. 
Ditto, ditto. 
Government powder, no bullet. 
Belt double battle powder. 
Government powder. 
Double battle powder. 
The following experiments N° 78, 79, 80, and 81. were 
made in hopes of being able to difeover a method of adding to 
the force of gun-powder. Twenty grains of the fubftances 
mentioned in the remarks upon each expenment were inti- 
mately mixed with the powder of the chaige. I11 the expen- 
ment N° 82. a large wad of tow, well foaked in etherial fpirit 
of turpentine, was pnt into the piece immediately upon the 
bullet : and in the experiment N° 83. a wad, foaked in alkohol, 
was put into the piece in like manner. 
/ / 
Order 
