TO 
_ JOHN BAKER, Esq. F. L. S. &c. 
Whose long friendship and gentle manners, with a 
constant attachment to useful pursuits, has long 
pleasingly engaged my esteem and gratitude, I beg 
permission to dedicate this part of my labours. 
That he may partake of that happiness he con- 
stantly deals to others, is the fervent hope of his 
most humble and faithful Servant, 
JAMES SOWERBY. 
2, Mead Place, Lambeth, 
May 25th, 1812. 
