SECTION MECHANICS (including Pure and Applied 

 Mathematics and Mechanical Drawing). 



Monday, May 2.2nd, 1876. 



Dr. SIEMENS, President, in the chair. 



The PRESIDENT : Ladies and Gentlemen, we now re-open the 

 Conference on mechanical subjects, and the first paper on our list is 

 that by Professor Kennedy, on Reuleaux's Collection of Kinematic 

 Models. I may take this opportunity of stating that it is the intention of 

 the department to organise a system of explanations at stated intervals 

 of the exhibits in the building. A list will be published stating the 

 days in the weeks at which exhibitors or their representatives, or 

 gentlemen qualified to do so, will give full explanations of certain 

 exhibits, and by this means it will be possible to extend the knowledge 

 to be obtained from this collection to a fuller extent than could be 

 realised by discussing these questions at these Conferences only. We 

 are naturally limited here to time, and can only sketch out the general 

 outline of the very large and interesting collection with which we have 

 to deal. I will now call on Professor Kennedy. 



Professor Alex. B. W. KENNEDY, of University College, London, 

 then delivered the following address 



ON THE COLLECTION OF KINEMATIC MODELS, 

 By Professor Reuleaux, of Berlin : 



Most of the models, of which a small number are upon the table 

 before you, are a portion of an educational collection designed by 

 Professor Reuleaux, the Director of the Royal Polytechnic Academy 

 in Berlin, for use in the classes of that Institution, the rest have been 

 sent to the Exhibition by Messrs. Hoff and Voigt of Berlin, and 

 Messrs. Bock and Handrick, of Dresden. They have been designed 

 chiefly to illustrate Reuleaux's Theory of Machines, a theory which 

 differs in some very important respects from any treatment of 



