CENTURY III. 127 



in a round orb of air : it were good to try the cre 

 ating of the echo where the body repercussing 

 maketh an angle : as against the return of a wall, 

 &c. Also we see that iu mirrors there is the like angle 

 of incidence, from tne^object to the glass, and from 

 the glass to the eye. And if you strike a ball side 

 long, not full upon the surface, the rebound will be 

 as much the contrary way : whether there be any 

 such resilience in echoes, that is, whether a man shall 

 hear better if he stand aside the body repercuss 

 ing, than if he stand where he speaketh, or any 

 where in a right line between, may be tried. Trial 

 likewise would be made, by standing nearer the 

 place of repercussing than he that speaketh ; and 

 again by standing farther off than he that speaketh ; 

 and so knowledge would be taken, whether echoes, 

 as well as original sounds, be not strongest near 

 hand. 



246. There be many places where you shall 

 hear a number of echoes one after another : and it is 

 when there is variety of hills or woods, some nearer, 

 some farther off: so that the return from the farther, 

 being last created, will be likewise last heard. 



247. As the voice goeth round, as well towards 

 the back, as towards the front of him that speaketh ; 

 so likewise doth the echo : for you have many back 

 echoes to the place where you stand. 



248* To make an echo that will report three, cr 

 four, or five words distinctly, it is requisite that the 

 body repercussing be a good distance off: for if it 

 be near, and yet not so near as to make a concurrent 



