The 



Royal Institution 



of 



Great Britain 



The Objects of the Foundation are "The Promo- 

 tion, Diffusion, and Extension of Science, and of 

 Useful Knowledge." In this work, without State 

 Endowment, and dependent solely on its Membership 

 for its success, the Royal Institution has laboured 

 for more than a Century. 



MEMBERSHIP OF THE ROYAL INSTITUTION. 



The Members are earnestly requested to call 

 the attention of their Friends to the privileges of 

 Membership, with a view to their joining the 

 Royal Institution. 



