We measured this polysyllabical echo with great 

 exactness, and found the distance to fall very short 



An old hop- kiln. 



of Dr. Plot's rule for distinct articulation : for the 

 Doctor, in his history of Oxfordshire, allows 120 feet 

 for the return of each syllable distinctly : hence this 

 echo, which gives ten distinct syllables, ought to 

 measure 400 yards, or 120 feet to each syllable ; where- 

 as our distance is only 258 3^ards, or near 75 feet to 

 each syllable. Thus our measure falls short of the 



Doctor's, as five to eight : but then it must be acknowl- 



92 



