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TO 



THE RIGHT HONOURABLE 



SIR JOSEPH BANKS, BART., K. B., 



P. R. S., H. M. L. S., P. R. I., ETC., 



as the grand Promoter of every Science connected 

 ivith Natural History ', especially Agriculture, to which 

 the Study of Mineralogy forms so necessary an Appen- 

 dage, I, with gratitude for his kindness, a second 

 time dedicate my labours. That they may be useful, 

 is the sincere ivish of 



His most obedient humble Servant, 



JAMES SOJVERBY. 



Mead Place, Lambeth, 

 Dec. 1, 1804. 



