PRESIDENTS AND SECRETARIES OF THE SECTIONS. 



SECTION L.— EDUCATIONAL SCIENCE. 



Ixxv 



CHAIRMEN AND SECRETARIES OF THE CONFERENCES OF 

 DELEGATES OF CORRESPONDING SOCIETIES. 



LIST OF EVENING DISCOURSES. 



Date and Place 



1842. Manchester 



Lecturer 



Charles Vignoles, F.R.S... 



Sir M. I. Brunei 

 K. L Murchison.. 



Subject of Discourse 



The Principles and Construction of 



Atmospheric Railways. 

 The Thames Tunnel, 

 i The Geology of Russia. 



