THE ROYAL ARTILLERY INSTITUTION. 
133 
March 15, 1861—Barometer (32°), 30-2457 Therm, (dry), 53°*3. Therm., wet, 48°*1. Elastic force of 
vapour, • 268. Humidity, * 67. Weight of cubic foot of air, 535 • 2 grs. To ascertain th,e initial velocity 
of the 8-in. hollow shot, common shell, and naval shell fired with service charges. 
1 
A 
o 
Projectile. 
Reading of 
Needle. 
Velocity. 
o 
Re- 
Range. 
Remarks. 
p 
i 
o 
o 
i§ 
^ Pi 
1 
;e! 
Nature. 
Dia¬ 
meter. 
'S 
coil. 
Dis- 
junctor. 
Pro¬ 
jectile. 
At 
30 yds. 
Initial. 
a 
£ 
lbs. 
oz. 
/ 
// 
O 
S 
ft. 
ft. 
yds. 
r 1 
10 0 
7-88 
46 
0 
9 
0 
32-20 
82*75 
1466*9 ' 
1 r 
263*6 
Gun laid horizontal 
2 
| 3 * * 
7-83 
46 
0 
8 
4 
40*40 
92*60 
1463*9 
263*6 
by spirit level 
3 
f- ^ o 
7-84 
46 
0 
8 
4 
40'55 
92*65 
1462*5 
[ 1487*9-! 
199*6 
every round. Gun 
> 
4 
7-85 
46 
4 
8 
9 
40*25 
93*35 
1443*0 
| Mean j 
mounted on a 
6 
J 
7-83 
46 
2 
8 
5 
40*65 
93*50 
1438*9. 
) 1455*0 l 
. 276*3 
rear chock car¬ 
r 6 
7-86 
49 
14 
8 
7 
40*70 
94*20 
1420*1 ' 
j r 
333*6 
riage. Weight of 
M 
7 
7*84 
49 
L4 
8 
6 
41*05 
93*90 
1438*6 
1 
253*0 
carriage 13 cwt. 
8 
l ^ J O 
7-84 
49 
14 
8 
9 
40*85 
94*00 
1435*9 
>■1404*4 { 
253*3 
Slope of platform, 
}► 
• o5 
7-87 
49 
14 
9 
1 
40*85 
93*70 
1444*0 
Mean | 
254*3 
5°. Powder, Hall 
J.0 
£ & 
00 
7*87 
49 
14 
9 
0 
40*75 
94*05 
1434*5 . 
J 1434*6 l 
248*0 
and Sons,22/11/60. 
ai 
„co 
7-91 
51 
8 
9 
10 
40*80 
91*70 
1500*9 ' 
1 r 
276*6 
Lot 814. 
X!. 
12 
7*93 
51 
8 
9 
n 
40*55 
92*85 
1462*8 
! 1 
297*3 
13 
L g P <d 
30 s « 
7-92 
51 
8 
* 
40*70 
92*80 
1462*4 
J»1506*4*{ 
281*0 
M 
14 
7-92 
51 
8 
* 
40*75 
91*65 
1497*2 
1 Mean j 
246*0 
! 
05 
OO 
” 
7*92 
51 
8 
* 
40-80 
93*10 
1455*8 
J 1475*8 l 
. 244*6 
March 9, 1861. 
Barometer (32°), 30°*530. 
Therm, (dry), 50° *3 
; wet, 43°*8. Elasticity,*201. Humidity, 
•54. 
Weight of cubic foot of air, 
554*5 grs. 
Experiments to ascertain the initial velocity of 32-pr. 
solid shot with 10, 
8, and 6 lbs. charges, and of 24-pr. solid shot with 8 lbs. charges. 
lbs. oz. 
lbs. oz. 
/ 
-/ 
O 
O 
ft. 
ft. 
yds. 
9/3/61. Gun laid 
f 1 
10 0 
6*17 
31 
6 
3 
6 
39*30 
85*95 
1627*2 
' 310*6 
2 
O 
6*17 
31 
5 
4 
3 
48*55 
95*10 
1661*5 
310*7 
horizontal by 
3 
CO 
” ” 
6*18 
31 
5 
4 
0 
48*70 
95*60 
1643*4 
327*0 
spirit level every 
4 
CO 
” ” 
6-16 
31 
5^ 
4 
84 
— 
— 
320*6 
round. Height 
5 
o 
u 
6*16 
31 
7 
4 
5 
48-30 
* 
— 
292 0 
of axis of gun 
6 
£ 
” ” 
6-17 
31 
5* 
4 
6 
48*20 
94*30 
1678*3 
■1690*0* 
328*3 
above plane 4' 3i". 
7 
6*17 
31 
6 
2 
44 
48*35 
96*00 
1617*2 
325*0 
Gun mounted on 
8 
o 
6-17 
31 
6 
3 
4 
48*20 
94*85 
1658*1 
299*9 
a rear chock car¬ 
9 
” ” 
6-18 
31 
7 
3 
4 
48*40 
95*05 
1650*9 
318*3 
riage. Slope of 
10 
£ 
6*17 
31 
7 
3 
3 
48-30 
94-85 
1658*1 
Mean 
— 
platform 5°. 
11 
& 
6-18 
31 
6 
3 
3 
48*60 
94*25 
1693*1 
1653*7 
371*6 
Weight of car¬ 
U2 
6-18 
81 
64 
3 
3 
48*65 
95*40 
1650*5 . 
l 
_ 330*6 
riage, 16cwt. 2qvs. 
fl3 
% 
8 0 
6-18 
31 
6} 
3 
9 
41*20 
8S*70 
1608*8 
' 290*0 
Powder, L.G., 
14 
o 
6*18 
31 
64 
3 
8 
46*85 
95*80 
1575*2 
— 
W. A., 26/11/60. 
15 
s 
o 
6-18 
81 
7 
3 
9 
46*95 
98*00 
1568*4 
325 *3 
Lot 260. 
16 
^r 
” ” 
6-17 
31 
6 
3 
8 
47*05 
95*75 
1585*5 
299*1 
Recoil printed in 
17 
fo 
” ” 
6-18 
31 
7 
3 
7 
47*20 
95*30 
1600*7 
310*8 
italics denotes 
a* 
18 
*S 
” ” 
‘rg 
6-18 
81 
7 
3 
9 
47*20 
95*80 
1583*8 
■1618-7- 
325*4 
that the break 
19 
CQ 
6-17 
31 
6 
2 
7 
46*90 
96*15 
1563*1 
-4- ' 
was used. In 
20 
fa 
6*17 
31 
5 
3 
9 
45*80 
95*55 
1582*8 
380*0 
other cases the 
21 
CO 
” 
P< 
6-18 
31 
6 
44 
46*85 
95*55 
1582*8 
Mean 
369*8 
break was not 
22 
§5 
6-17 
31 
5i 
3 
5 
46*90 
95*00 
1601*3 
1584*7 
326*7 
used. 
123 
CO 
” 
6 18 
31 
6 
8 
10 
46*95 
95*60 
1581*1 
, l 
_ 330*3 
* Not observed. 
CM 
O 
6 0 
6*16 
31 
5 
2 
6 
46 95 
102*25 
1384*6 
— 
25 
£ 
619 
31 
6| 
2 
5 
46*95 
100*50 
1432*0 
' 
26 
27 
£ 
6-18 
31 
5 
2 
4 
48*85 
101*20 
1412*7 
329*0 
6-17 
31 
7 
2 
6 
46*95 
100*75 
1425*1 
244*6 
28 
60 
6-18 
31 
5 
2 
5 
46*90 
101*10 
1415 5 
257*6 
w 
, 29 
-g 
6*17 
31 
6 
2 
4 
46*90 
100*70 
1426*5 
■1147*5- 
248-6 
30 
£ 
o 
6-18 
31 
54 
2 
5 
46*95 
100*45 
1433*4 
322*8 
31 
OO 
6-18 
31 
6 
2 
6 
46*95 
101*30 
1410*0 
Mean 
299*4 
32 
6*17 
31 
5 
2 
9 
46*80 
101*20 
1412*7 
1418*8 
301*3 
33 
6-18 
31 
5 
2 
6 
46-85 
99*95 
1447*6 
243*1 
34 
6-17 
31 
54 
2 
6 
46*85 
* 
— 
291*5 
135 
00 
;; ” 
6’16 
31 
54 
2 
5 
46*85 
101*40 
1407*3 . 
. 238*5 
1 
2‘"- 
8 0 
5-61 
23 
7 
4 11 
46*95 
94*45 
1626*0 
' 301*0 
Guri laid horizontal. 
2 
.SPqS 
5*59 
23 
8 
5 
0 
47*00 
93*40 
1863*4 
— • 
Height of axis of 
3 
.■23 
-+3 
5-60 
23 
8 
5 
4 
47*00 
93*05 
1676-2 
253*0 
gun, 5 ft. Travel¬ 
ling carriage. 
4 
IgjS 
ji 
5*60 
23 
8 
6 
0 
47*05 
92*40 
1700*5 
302*0 
5 
5-59 
23 
7 
6 
3 
47*00 
92*50 
1698*8 
324-0 
Slope of platform, 
XIII 
6 
7 
P|2 
*o 
5*60 
5‘60 
23 
23 
8 
8 
6 
0 
46*95 
47*00 
93*45 
1661*6 
}■ 1720'5- 
351-0 
266*0 
3°. Powder, L. G., 
W. A., 26/11/60. 
8 
g®l® 
5*60 
23 
7 
47*10 
93*00 
1678*1 
327*0 
Lot 260. 
9 
P< 
5-61 
23 
8 
5 
0 
47*10 
92*75 
1687*4 
355-0 
10 
j s’S>5 
” 
A 
5-60 
23 
7 
5 
0 
47*15 
91*60 
1731*4 
Mean 
362 0 
11 
?g|g 
5*61 
23 
7 
5 
8 
47*10 
93*45 
1661*6 
1679*5 
359 * 0 
112 
» 
5*61 
23 
7 
47*10 
92*65 
1691*1 
. 379*0 
B 
