ELASTICITY VIEWED AS POSSIBLY 

 A MODE OF MOTION. 



\Abstract of a Friday evening Lecture before the Royal 

 Institution of Great Britain, March 4, 1881 (Proc. R. I. 

 vol. ix. p. 520).] 



WITH reference to the title of his discourse the 

 speaker said : " The mere title of Dr. Tyndall's 

 beautiful book, Heat, a Mode of Motion, is a lesson 

 of truth which has manifested far and wide through 

 the world one of the greatest discoveries of modern 

 philosophy. I have always admired it ; I have 

 long coveted it for Elasticity ; and now, by kind 

 permission of its inventor, I have borrowed it for 

 this evening's discourse." 



" A century and a half ago Daniel Bernouilli 

 shadowed forth the kinetic theory of the elasticity 

 of gases, which has been accepted as truth by 



