196 POPULAR LECTURES AND ADDRESSES. 



" which is projected from their heads with such 

 traordinary velocity, and if not impelled, at 

 " least directed, in its course, by reference to the 

 in, as its point of avoidance." x 



"In no respect is the question as to the 

 " materiality of the tail more forcibly pressed on 

 " us for consideration than in that of the enormous 

 " sweep which it makes round the sun /// penhelio 

 " in the manner of a straight and rigid rod, in 

 14 defiance of the law of gravitation, nay, even of 

 " the received laws of motion. " 1 



"The projection of this ray ... to so enormous 



"a length, in a single clay conveys an impression 



" of the intensity of the forces acting to produce 



" such a velocity <>f material transfer through space, 



"such as no other natural phenomenon is capable* 



it ing. It is clear that if uv have to deal 



"here with matter, such as uv conccii'e //, viz., 



" fjosst'ssing inertia at all, it must be under the 



"dominion of forces incomparably more energetic 



'than gravitation, and quite of a different nature." 



1 1 1 ' ironomy, 599. 



Astronomy, loth Edition, 589. 



