570 POPULAR LECTURES AND ADDRESSES. 



corrected the British Association's standard ohm, 

 which he found to be 17 per cent, wrong. 

 Regarding the ohm a diplomatic correspondence 

 is now going on through our Foreign Office with 

 other Governments for the purpose of arranging 

 the precise terms of the definition of the ohm, of 

 which a correct standard was really first worked 

 out by Joule. May I be allowed to congratulate 

 the sculptor, Mr. Gilbert, on the great beauty, 

 originality, and success of his work. Manchester 

 now possesses two statues, Dalton on the left and 

 Joule on the right of the entrance to its Municipal 

 Buildings ; the man who laid the foundation of 

 the atomic theory in chemistry and the man who 

 discovered the mechanical equivalent of heat. If 

 the prosperity of Manchester does not depend on 

 chemistry and on the steam engine and thermo- 

 dynamics I do not know upon what it does 

 depend, unless it be the energy and industry and 

 honourable character of its inhabitants ; but you 

 must ever remember that the material prosperity 

 of this great city has owed more to philosophic 

 thought than to any material appliance whatever. 



