upon Gun-powder , Bee, 
Recoil 
Weight of 
the bullet. 
A&ual, 
" > 
Computed. 
Difference. 
"9 2 d exp. 
235 2 
32.25 
32,25. 
91 ft 
x 75 4 
27,18 
27,22 
+0,04 
90 th 
1184 
2 1., 93 
2i ’ 8 5 
- 0,07 
■89th 
603 
I 5» 1 3 
*5,33 
+0,2 
88th 
{w'il l 
600 
15,22 
15,29 
+ 0,07 
8.7 th 
35 4 
1 1,03 
CO 
r. 
+0,84 
86 th 
251 
9,62 
10,21 
+ °>59 
85th 
90 
7,16 
7,02 
-0,14 
84th and 93d 
0 
4,4 
4,4 
*■ ' 8*1$ !*j-vy 
Here the agreement of the actual and computed recoils is as 
remarkable as that of the aftual and computed velocities in the 
foregoing table. 
By the figure 17. may be feen at one view the refult of all 
thefe experiments and computations. The numbers upon the 
line AB (as in the fig. 16.) reprefent the weights of the bullets, 
while the lines drawn from thofe numbers perpendicular to AB 
on each fide, and ending at the curves m, n, are as the velocities 
of the bullets in the feveral experiments ; the line AB being the 
axis of the curves, the lengths taken from A to the different 
numbers towards B ( = x) the abfeiffa, and the perpendiculars 
( =y ) the correfponding ordinates. The ordinates to the 
the curve hn, are as the velocities computed from the theorem 
—pL— = y, and the ordinates to the curve p, n (which is the 
logarithmic curve, as it is 77 =y) fhew the velocities computed 
upon Mr. robins’s principles. The curve gf is drawn from 
U u 2 the 
