184 
MINUTES OE PROCEEDINGS OF 
ROUND 18. 
Clock. 
Screens. 
Reading. 
Correction. 
Corrected 
Reading. 
No. 
Reading. 
Correction. 
Corrected! 
Reading 
Time. Aj 
a 2 
46-350 
•000 
46-350 
1 
57-270 
+ -001 
57-271 
+1057 
•2123 +1066 
-3200 +1077 
-4287 +1087 
.So? +1110 
+1123 
•8754 t“g 
•9905 +1151 
54-790 
+ -010 
54-800 
2 
58-360 
+ -003 
68-363 
+ 9 
63-260 
- -010 
63-250 
3 
59-470 
- -004 
69-466 
+ 11 
71-700 
•000 
71-700 
4 
60-580 
- -001 
60-579 
+ 10 
5 
61-700 
+ -003 
61-703 
+ 11 
6 
62-840 
- -002 
62-838 
+ 12 
7 
63-980 
+ -005 
63-985 
+ 13 
8 
* * * 
* 
65-146 
+ 13 
9 
66-320 
+ -001 
66-321 
+ 15 
10 
67-510 
- -001 
67-509 
As these experiments were made merely to test the instrument, the forms 
and weights of the shot were not examined, consequently nothing would be 
gained by attempting to find the law of resistance in each of the preceding cases. 
This method of proceeding, or something equivalent, will be necessary when 
that law is sought for, because the shot do not pass the first screen with the same 
velocity. At present it will be sufficient to find the mean time occupied by 
the ball in passing from the first to each of the following screens. We are 
thus able to answer, from experiment alone, the practical question, what is the 
average velocity of a 12 lb. shot fired from the given gun with the given 
charge, at any point between 120 feet and 1000 feet from the gun ? 
Round 
Screen 
Screen 
Screen 
Screen 
Screen 
Screen 
Screen 
Screen 
Screen 
Screen 
1 
2 
3 
4 
5 
6 
7 
8 
9 
10 
u 
// 
n 
// 
n 
// 
// 
// 
// 
ff 
1 
0-0000 
0-1064 
0-2141 
0-3229 
0-4328 
0-5437 
0-6556 
0-7682 
0-8814 
0-9950 
2 
•0000 
•1045 
•2098 
•3160 
•4232 
•5319 
•6422 
•7538 
•8670 
•9818 
6 
•0000 
‘1046 
•2102 
•3170 
•4248 
•5338 
•6438 
•7553 
•8682 
* 
7 
•0000 
•1033 
•2087 
•3157 
•4240 
•5333 
•6433 
•7541 
•8659 
•9787 
10 
•0000 
•1054 
•2117 
•3189 
•4273 
•5368 
•6477 
•7600 
•8736 
•9884 
11 
‘0000 
•1047 
•2110 
•3188 
•4281 
•5387 
•6505 
•7630 
* 
13 
•0000 
•1051 
.2112 
•3183 
•4266 
•5362 
•6471 
•7592 
•8723 
•9866 
15 
•0000 
•1042 
.2102 
•3175 
•4262 
•5359 
•6466 
•7580 
* 
# 
16 
•0000 
•1050 
•2111 
•3185 
•4273 
•5375 
•6490 
•7617 
•8757 
•9908 
17 
•0000 
•1049 
•2114 
•3193 
•4285 
•5389 
•6505 
•7636 
•8783 
•9947 
18 
•0000 
■1057 
•2123 
•3200 
•4287 
•5385 
•6495 
•7618 
•8754 
•9905 
Totals ... 
I -0009 
1-1538 
2-3217 
3-5029 
4-6975 
|5-9052 
7-1258 
8-3587 
7-8578 
7-9065 
Divisors 1 
11 
11 
11 
11 
1 11 
11 
11 
9 
8 
Means...' 
•00000 
•10489 
•21106 
•31845 
•42705 
! -53684 
•64780 
•75988 
•87309 
•98831 
Distance 
from gun. 
ft. 
120 
240 
360 
480 
600 
720 
840 
960 
1080 
1200 
Screen. 
Time. 
A x A 2 
1 
2 
3 
4 
6 
6 
7 
8 
9 
10 
0-00000 
•10489 
•21106 
•31845 
•42705 
•53684 
•64780 
•75988 
•87309 
•98831 
+ 10489 
+ 10617 
+ 10739 
+ 10860 
+ 10979 
+ 11096 
+ 11208 
+ 11321 
+ 11522 
+ 128 
+ 122 
+ 121 
+ 119 
+ 117 
+ 112 
+ 113 
+ 201 
