Mzs 



SCIEBCR 

 U&RARY 



DEDICATION. 



TO THE 



HONOURABLE THOMAS COOPER, Esq. 

 PHILADELPHIA. 



SIR, 



As the promoter of general science, and as a friend 

 from whom repeated marks of favour and confidence have 

 been received, this imperfect work on the Geological phe- 

 nomena of this, and some other countries, is, with senti* 

 ments of gratitude, respectfully inscribed, 

 by your much obliged, 



and very obed't servant, 



H. H. HAYDEN. 

 Baltimore, October 13th, 1820. 



388 



