254° H. F. Walling on Gravitation. 
Art. XXIX.—Remarks on Gravitation, and its relation to a sup- 
posed Universal Force ; by Henry F. WALLING. 
ing through its center of gravity. : 
ose a single atom of matter to exist in space. 
We shall readily perceive, that there will be no resultant foree 
Since the atom is acted upon in every direction alike, each im- 
pinging ray being counteracted by its opposite ray, producing an 
equilibrium, in which we may suppose the force of each imping- 
ing ray to be decombined or developed from the atom by its 
oe ray so that the general store of force remains un- 
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But let. there be two atoms at a given distance from each 
other, as A and B in the figure, which we will suppose to be ot 
A definitely small, so that only one line 0 
will be seen that each atom intercepts the ray which pass 
through it before reaching the other, and thas a portion of the 
counte: . o th 
lent resul nt force acts upon each atom in the direction of the 
other. ‘This action continues during each successive instant pro- 
4 uniformly accelerated motions of both atoms toward each = 
Let uss 
of inertia, B 
each toward 
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