418 
Mr. Dillwyn on fossil shells. 
regularly approximating affinity can be observed in the 
other classes, I must leave it for those who are more con- 
versant with them to decide. 
I remain, my dear Sir, 
very faithfully your’s, 
L. W. Dillwyn. 
Penllergare, leb. i, 1824. 
\ « 
Sir Humphry Davy, Bart. P.R. S. See. & c. 
