•v 
2^6 Mr. THdMrsoN’s Experiments 
And taking the means of ail the velocities in both fets in 
each pofition of the vent it will be, 
Vent at o. Vent at 1,3. Vent at 2,6. 
Mean velocity 1436 ^ 14 93 1437 
The mean recoils in thefe experiments were, 
Vent at o. Vent at 1*3. Vent at 2,6. 
22,88 23,34 23,61 
In the experiments with 310 grains 'of powder the velocities 
of the bullets were not determined with fufficient accuracy to 
be* depended on ; but the recoils, which were meafured w T ith 
great nicety, were as follows, viz. 
Vent at o. Vent at 1,3. Vent at 2,6 
24,69 24,95 24,9 
With 330 grains of- powder the mean velocities and recoils 
were, 
Vent at o. Vent at 1,3. Vent at 2,6. 
Velocities 1594 1625 1525 
Recoils 26,075 26,4 25,3 
In the experiments with 437! grains (an ounce avoirdupois) 
of powder the velocities and recoils were, 
Vent at 
vV 
O. 
Vent at 
■ ii ^ m 
2,6. 
f 
Velocity. 
> 
Recoil, 
Velocity. 
Recoil. 
1738 
33 > 
i 7°7 
3 2 >5 
1824 
33’ 3 
!/57 
33> z 
1728 
33’ 6 
1789 
3 2 ’9 
3)s 2 9 l 
3 ) 99’9 
3 ) 5 2 53 
3 ) 9 8 > 6 
Means x 764 
33’3 
I 75 I 
32,866 
> f ‘ 
Secondly, 
1 
