ADVERTISEMENT. 
4 unexpectedly rapid sale of the Third Edition 
of this work has compelled the Editor of the pre- 
sent Edition to submit it to the Public under 
several very unfavourable circumstances, which it 
is here unnecessary to particularize. 
Nevertheless, he trusts, the discriminating Bo- 
tanist will think the numerous corrections and 
additions sufficient to justify the publication, espe- _ 
cially when it is considered that the last thoroughly 
reformed Edition was nearly ten years in prepara- 
tion, this only three, ait ; 
‘Beside the many respectable names contained 
in the list affixed to the Preface, several other 
correspondents have liberally contributed their 
assistance : particularly 3 
Mr. George Carey, Strangeways, near Manchester. 
Mr. W. Evans, Tildsley- Chaddock, Lancashire. 
Sir Tho, FRANKLAND, Bart, Thirkleby, near York. 
Mr. Garnier, Wickham, near Fareham, Hants. 
Rev. Tho. Gisporne, Yowall Lodge, near Litchfield. 
Rey. John Harrman, Eglestone, near Barnard Castle, 
county of Durham. 3 
