k- 



A? 3 



THE MOST NOBLE 



THE MAKQUESS OF NORTHAMPTON, 



PRESIDENT OF THE ROYAL SOCIETY, 



&C. &C. &C., 



THIS WORK IS MOST RESPECTFULLY INSCRIBED, 



IN GRATEFUL ACKNOWLEDGMENT OF 



ZEALOUS EXERTIONS FOR THE ADVANCEMENT OF SCIENCE AND ART, 



AND A3 A 



TESTIMONY OF THE HIGH RESPECT AND REGARD OF 



THE AUTHOR. 



Chester Square, Pimlico ; 

 February, 1846. 



