PREFACE. ix 
the characters of the Orders. and Genera, and generally for what may be 
considered the botanical department of this Work, from its commencement to 
the end of the genus Salix. Heis, also,indebted to W. Withers, Esq., of Holt, 
Norfolk, for the loan of his unpublished work on the Robinia Pseud-Acacia ; 
to W. Borrer, Esq., F.L.S., for the arrangement into groups of the numerous 
species of the difficult genus Salix, and for looking over the proof sheets of 
the article on that genus; to Professor Alphonse De Candolle, for looking 
over the proof sheets of the article on Salisburia, as well as for examining the 
proofs of the history of trees in France and Switzerland ; to M. Vilmorin, for 
looking over the proof sheets of the history of trees and shrubs in France ; to 
the late M. Fischer, of the Botanic Garden, Gottingen, and to M. Otto, of 
Berlin, for looking over the proof sheets of the history of trees in Germany ; 
to Professor Don, for arranging and looking over the whole of the generic 
characters, and some of the proof sheets, of the Coniferz ; and to Mr, Gorrie, 
for examining the proof sheets of the article on the Larch. 
To His Grace the Duke of Bedford the author is indebted for much valuable 
information on the subject of trees, and more especially respecting the Oak, 
the Scotch Pine, and the Cedar of Lebanon, communicated either directly 
by His Grace, or through his forester at Woburn Abbey, Mr. Ireland ; as well 
as for permission (of which he has availed himself) to make whatever use 
he chose of that magnificent work the Salictum Woburnense. To the Duke 
of Richmond, the Earl of Aberdeen, Macpherson Grant, Esq., and Mr. Grigor, 
of Forres, he is indebted for important communications respecting the Scotch 
Pine in Scotland; to the Duke of Portland for various researches respecting 
the Oak in Nottinghamshire; and to the Earl of Wicklow, Earl Roden, Lord 
Viscount Ferrard, Sir Robert Bateson, Mr. Mackay, and Mr. Niven, for 
information respecting the trees and shrubs of Ireland. 
The author, in conclusion, has only to request that the readers of this Work 
will send to him whatever corrections, additions, or suggestions may occur to 
them on its perusal, or at any future period, It is his intention to publish what- 
ever additional matter he may receive from correspondents, or procure him- 
self, in an Annual Report in the Gardener’s Magazine; and to include in this 
report notices of all the trees and shrubs which may, during the year, have been 
introduced from foreign countries, or originated in this country from intentional 
hybridisation or accident. This report will also include such improvements as 
may from time to time be made in arboricultural nomenclature, such as the 
re-arrangement of the species of a genus, &c.; and, in short, every thing that 
may be found requisite to keep up the information contained in the Arbore- 
tum et Fruticetum Britannicum, with the actual progress of knowledge on the 
subject. The essence of these annual reports will be collected from time to 
time, and published in pamphlets, as supplements to the Arboretum ; so that 
the possessor of this first edition may have it in his power, at any future 
time, to bring the Work down to the latest date, without being under the 
necessity of purchasing a new edition. 
J.C. L. 
Bayswater, May 20. 1838. 
