
vi PREFACE, 
together with the results of further explorations, we hope to incor- 
porate in a new edition, should the present issue meet with the 
generous approbation of the public. 
We gladly avail ourselves of the opportunity now afforded, to 
renew our thanks to those numerous correspondents who have made 
us acquainted with the results of their researches among the 
British Ferns, and to whom the volumes now concluded owe much 
of their value. 
CHELSEA, May 29th, 1860. 

