yo  Mr.  hutton  on  the  initial 
Of  the  pendulum,  the  weight,  length,  and  centers  of 
gravity  and  of  ofcillation  were  the  fame  as  when  taken 
the  former  day  before  the  experiments  were  made ; the 
former  balls  having  been  extracted,  and  the  holes  filled 
up  with  wood. 
u 
•1) 
l 
3 
Weight  of 
powder. 
Diam.  of 
the  ball. 
Height  of 
the 
charge. 
1 Struck  be- 
low the 
axis,  k . 
c 1 
■m  1 — < 
_n  d 
'5  u 
Weight  of 
the  bail,  b. 
Values 
of  p . 
Values 
of  g. 
Chord 
of  the 
arc,  c. 
V eloc. 
per  fe- 
cond. 
Oz. 
In. 
Inches. 
Inches. 
Oz. 
Pounds 
Pounds 
Inches.  'Inches. 
) 
Feet. 
I 
2 
2.08 
2.85 
88  J 
191 
1. 219 
328.0 
72.0 
24-3 
800 
2 
0 
2.08 
2.85 
89 
:9i 
1. 219 
329  2 
72.1 
3°-5 
1003  • 
3 
2 
2.08 
2.85 
93i 
!9i 
1. 219 
33°*4 
72.1 
3°.° 
943 
4 
2 
2. .08 
3 35 
92i 
461 
2.906 
331-6 
72.2 
57  0 
767 
5 
2 
2.08 
3-35 
93 
+61 
2.906 
334*5 
72.4 
54-o 
731 
Here  the  firft  fhot  is  again  fo  much  fmaller  than  the 
two  following  ones,  that  fome  irregularity  muft  have 
attended  it,  on  which  account  we  cannot  make  any  ufe 
of  it.  The  mean  between  the  fecond  and  third  is  973 ; 
and  between  the  fourth  and  fifth  the  mean  is  749 ; that 
is,  the  velocity  of  the  1 9^  ounce  ball  is  973,  and  that  of 
the  467  ounce  fhot  749  feet  per  fecond,  which  two  num- 
bers are  in  the  ratio  of  1 .3  to  1.  But  the  reciprocal  fub- 
duplicate  ratio  of  the  weights  (197  and  467)  is  the  ratio 
of  1.5  4 to  1:  therefore,  in  this  inftance,  the  velocity  of 
the  heavier  fhot  is  a little  lefs  than  would  arife  from  the 
inverfe 
