( 20 6 ) 
Curve, compared with the Variations of the 
Compafs correfponding to its refpe&ive points, f 
found that the Magnetical power decreafed fafter at 
the greater diftances than at the nearer. It is of lit- 
tle ule to be very particular in the account of the 
feveral Obfervations. i (hall only take notice, that at 
about two Inches and a quarter difrance, the Force 
did not alter fo fa ft as the Squares, and at ten Inches 
diftance f where the Variation was one degree only) 
it alter’d fafter than the Cubes, the Index of the Pow- 
er being about 37. The Needle of the Compafs was 
fo Ihort, that to fuppofe its Center of Force to be ei- 
ther in the middle or at the extremity of it, would 
not alter the Index of the Powers of the diftances 
of an Unite. 
1 made another Experiment to the fame purpofe, 
with a Compafs Needle made of a flight piece of 
Straw, with a fmall piece of Steel-wire faften’d to 
one end of it, which was always kept in the fame 
pofition, being balanced between two perpendicular 
Needles, one of which was moveable, and the 0- 
ther fix’d. The Event was much the fame as in 
die former Experiment. 
Endeavouring to find the true Poles, or Centers 
of the magnetical Power in touch’d Needles, I made 
a Needle of two Inches long, of the fine Steel-wire, 
which 1 touch’d with the South point of a fmall 
capt Loadftone, applying the point of the Cap only 
t'o the Extremity of the Needle, without drawing it 
along. The Needle fo touch’d, being laid gently 
on the Surface of a ftagnant Water, floated. I then 
applied to it fuccefGvely the two ends of a touch’d 
Needle, 
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