CONCLUSION. 239 



progressed, have been almost universally adopted, and for this 

 reason the Addenda has become larger than it otherwise would 

 have been. 



Since the commencement of the work a variety of New 

 Ferns have been introduced into cultivation in this countrv, 



ml ' 



and these are now being described and figured monthly in an 

 addenda to the present work, entitled "A Natural History of 

 New and Rare Ferns," of which three numbers have already 

 appeared. 



The author's endeavour, in publishing a work on Ferns, has 

 been to describe as faithfully as he was able, the different 

 Ferns cultivated in the gardens, greenhouses, and stoves, of 

 Great Britain, and to give this information with coloured 

 illustrations in a very cheap form, (considering the expense of 

 the plates) to the public, leaving the deep study of the subject 

 to the valuable works, already quoted, of Sir W. J. Hooker 

 and Mr. Moore. 



VOL. VIII. 2 K 



