PREFACE.

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the specimens of trees and shrubs in the Linnean herbarium; as he is toA. B. Lambert, Esq., V.P.L.S., &c., for the use of his magnificent libraryand unique herbarium, and for the living specimens of the Conifer® fromBoyton; and to W. T. Aiton, Esq., F.L.S., H.S., &c., Her Majesty’s Garden-Director at Kew, for specimens of the trees and shrubs in the arboretum there,for the loan of manuscripts, and for other valuable information and assistance,communicated either directly by himself, or through that scientific and assidu-ous botanist and cultivator, Mr. Smith, foreman of the Kew Botanic Garden.

To His Grace the Duke of Northumberland the author is indebted, notonly for access for himself and artists to examine and take portraits of thesplendid exotic trees at Syon, but for drawings of upwards of a hundredof the largest and rarest of those trees, made for this Work by G. R.Lewis, Esq., at His Grace’s expense, and also for engravings from severalof the largest of these drawings. To Mrs. Lawrence of Studley Royalhe is obliged for the portraits of many of the noble trees in the parkat Studley, that lady having employed a London artist, H. W. Jukes, Esq.,for several months for that purpose ; and to the Rev. J. Charnock, for di-recting the measurements, and supplying interesting information respectingthose trees. To the Countess of Bridgewater he is indebted for portraits ofthe gigantic beeches at Ashridge: and to Lady Grenville, for permission to takedrawings, and for numerous specimens of the vlbietin® in the magnificentpinetum at Dropmore; and to Her Ladyship’s intelligent and most industriousgardener, Mr. Frost, for supplying valuable information respecting their cultureand management, and for lending every assistance in his power. Portraits oftrees, and many specimens, have also been sent by various other persons indifferent parts of Great Britain and Ireland, whose names, lest any individualshould be by chance omitted, it is not endeavoured here to enumerate.

The author is also indebted, for portraits, specimens, and information, tovarious amateurs and gardeners on the Continent, as well as to correspond-ents in North America and Australia; and more especially to M. AlphonseDe Candolle of Geneva; to M. Andre Michaux, M. Vilmorin, M. LoiseleurDeslongchamps, and M. Soulange-Bodin, of Paris; to Baron Jacquin, and M.Charles Rauch, of Vienna; to Professor Reinwardt, Leyden; Professor Kops,Utrecht; M. Otto, Berlin; Messrs. Booth, Hamburg; Professor Schouwand M. Petersen, Copenhagen; Bishop Agardh, Carlstadt, Sweden; Dr.Fischer, Petersburg; M. Fintelman, Moscow; M. Descemet, Odessa; Sr.G. Manetti, Monza, near Milan; the Honourable Keppel Craven, Naples;Dr. Mease, Philadelphia; Col. Carr, of Bartram’s Botanic Garden ; and JohnThompson, Esq., Surveyor General’s office, Sydney.

In the literary department the author received the assistance of the Rev.M. J. Berkeley, M. A., F.L.S., for the lists of Fungi inhabiting different spe-cies of trees ; of J. O. Westwood, Esq., F.L.S., Secretary to the EntomologicalSociety,for descriptions and drawings of the Insects infesting different species;of Wm. Spence, Esq., F.L.S., and of M. Audouin, Member of the Instituteof France, and Professor of Entomology, for information respecting the speciesof Scdlytus injurious to the elm; of Mr. John Denson, A.L.S., in drawing up