Address of the President of the Royal Society. 111 
the elucidation of the geological history of our planet during those early 
E F 
periods of which the records are most difficult to unfold. Few persons, 
with when he first entered North Wales as a geologist. Geologically 
i d the 
a complicated mountain or district with those in another, so as to form 
a distinct geometrical conception of the arrangement of the sewed 
Mm. 7 
extremely doubtful whether any other British geologist forty years ago 
could have undertaken, with a fair chance of success, the great and diffi- 
The Copley Medal was then presented with the following address :-— 
“ Proressor SepewicK,—Accept this medal, the highest honor which 
thirty-five years, during which they have been more especially devoted 4 
that extensive and most difficult order of plants the fungi, have rende 
Besid pers in various journals on fungi from all parts 
of the globe, and in particular an early and admirable memoir on British 
