SECTION MECHANICS (including Pure and Applied 

 Mathematics and Mechanical Drawing). 



President: Mr. C. W. SIEMENS, D.C.L., F.R.S. 



Vice-P residents : 



Mr. F. J. BRAMWELL, F.R.S. 

 Mr. W. FROUDE, M.A., F.R.S. 



M. le General MORIN, Directeur 

 du Conservatoire des Arts et 



Dr. WERNER SIEMENS. 



M. TRESCA, Sous-Directeur da 

 Conservatoire des Arts et 

 Metiers. 



Sir JOSEPH WHITWORTH, Bart., 



D.C.L., F.R.S. 



May ilth, 1876. 



Metiers. 



DR. C. W. SIEMENS' OPENING ADDRESS. 



In opening the proceedings of the Conferences regarding me- 

 chanical science, it behoves me to draw attention to the lines of 

 demarcation which separate us from other branches of natural 

 science represented in this Exhibition. 



In the department of applied science we have collected here 

 apparatus of vast historical interest, including the original steam 

 cylinder constructed by Papin in 1690, the earliest steam-engines by 

 Savery and by James Watt, the famous locomotive engine the 

 " Rocket," by which George Stephenson achieved his early triumphs, 

 as well as Bell's original marine engine, and a variety of models 

 illustrative of the progress of hydraulic engineering and of machinery 

 for the production of textile fabrics. In close proximity to these we 

 find a collection of models illustrative of the remarkable advance in 

 naval architecture which distinguishes the present day. 



It would be impossible to deny the intrinsic interest attaching to 

 such a collection or its intimate connection with the progress of pure 

 science ; for how could science have progressed at the rate evidenced 



