OF THE VELOCITY OF MOTION OF THE WAVE-PARTICLE. i O 



height through which its centre of gravity fell, and a the horizontal dis- 

 tance through which it was projected, then — 



b=\gP 



a-=v t 

 where g is the accelerating force of gravity, t the .time of flight and 

 v the horizontal velocity of projection ; since t is the same in both 

 equations, we can easily obtain from them the formula — 



%b 



In this particular case a=13 ft. and 5=8 ft., and taking g as 

 82 ft. per sec. — 



JO" 



If, as explained in the preceding chapter, we take the superficial 

 angle of emergence at 80° and calling V the velocity of wave-particle 

 at the surface — 



Y=v sec. 30° 

 = 21-16 



Thus much for the cap of the eastern gate pier. The western 

 pier does not in this way give very much evidence ; for, owing to the 

 upper portion of the pillar being more' shattered, and apparently owing 

 to a greater want of cohesion in the brickwork, the cap was not so 

 horizontally thrown off and consequently did not travel so far ; it is also 

 overturned, thus complicating the question ; and altogether it does not 

 give such definite information as its companion of the eastern pillar. 



We will now speak of Mr. Stewart's tomb, and consider the evidence 

 it affords. This tomb has been briefly described at p. 10, but it will 

 be necessary to describe its construction more minutely than was there 

 done, in order to realise exactly what took place ; for without realising 

 this, no satisfactory conclusions can be drawn. 



The body of the sarcophagus was raised in the centre of a terrace or 

 raised platform of two steps 5 inches each, and 1 foot 2 inches in breadth, 

 or tread, made of Chunar stone, the gravel and grass had grown round the 



( 73 ) 



