

TO 



JAMES CHARLES DALE, Esq. M.A. F.L.S. &c. 



WHOSE FRIENDSHIP AND KINDNESS 



TO THE AUTHOR 



HAVE BEEN EQUALLED ONLY 



BY HIS LIBERAL CONTRIBUTIONS AND ZEALOUS ENDEAVOURS 



TO RENDER THIS WORK MORE USEFUL TO SCIENCE, 



THE PRESENT VOLUME 



IS DEDICATED, 

 AS A SINCERE TOKEN OF REGARD AND ESTEEM. 



LoiKloii, Dec. 1, 1832. 



