Philadelphia, July 3, 1841. 

 Gentlemen— In reply to your note of yesterday, and the accompanying 

 Resolutions, permit me to express, through you, my grateful acknowledgments 

 to the Members of the Academy for the flattering manner in which they have 

 received my memoir of the late William Maclure. 



During a connection of many years with our Institution, it has been my 

 constant aim to advance its interests, which are strictly identified with those 

 of Science ; and if my efforts have been in any degree successful, I shall 

 ever find an ample reward in the approbation of my Associates. 

 I remain, gentlemen, with sincere esteem, 



Your very obliged friend and servant, 



SAMUEL GEORGE MORTON. 



To Prof. Walter R. Johnson, ~) 



John Price Wetherill, Esq., and > Committee, 

 Robert Bridges, M. D., j 



